diff --git a/actions/challenges.js b/actions/challenges.js
index 6c9ec79f6..ceb4828ec 100755
--- a/actions/challenges.js
+++ b/actions/challenges.js
@@ -345,7 +345,7 @@ function validateInputParameter(helper, caller, challengeType, query, filter, pa
     var error = helper.checkContains(['asc', 'desc'], sortOrder.toLowerCase(), "sortOrder") ||
             helper.checkPageIndex(pageIndex, "pageIndex") ||
             helper.checkPositiveInteger(pageSize, "pageSize") ||
-            helper.checkMaxNumber(pageSize, MAX_INT, 'pageSize') ||
+            helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, 'pageSize') ||
             helper.checkMaxNumber(pageIndex, MAX_INT, 'pageIndex') ||
             helper.checkContains(helper.VALID_LIST_TYPE, type.toUpperCase(), "type") ||
             checkQueryParameterAndSortColumn(helper, type, query, sortColumn);
@@ -505,7 +505,7 @@ function validateInputParameterV2(helper, caller, type, query, filter, pageIndex
     var error = helper.checkContains(['asc', 'desc'], sortOrder.toLowerCase(), "sortOrder") ||
         helper.checkPageIndex(pageIndex, "pageIndex") ||
         helper.checkPositiveInteger(pageSize, "pageSize") ||
-        helper.checkMaxNumber(pageSize, MAX_INT, 'pageSize') ||
+        helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, 'pageSize') ||
         helper.checkMaxNumber(pageIndex, MAX_INT, 'pageIndex') ||
         checkQueryParameterAndSortColumnV2(helper, listType, query, sortColumn);
 
@@ -938,7 +938,7 @@ var searchChallenges = function (api, connection, dbConnectionMap, community, ne
     sortColumn = query.sortcolumn || DEFAULT_SORT_COLUMN;
     listType = (query.listtype || helper.ListType.OPEN).toUpperCase();
     pageIndex = Number(query.pageindex || 1);
-    pageSize = Number(query.pagesize || 50);
+    pageSize = Number(query.pagesize || helper.MAX_PAGE_SIZE);
 
     copyToFilter.forEach(function (p) {
         if (query.hasOwnProperty(p.toLowerCase())) {
@@ -952,7 +952,7 @@ var searchChallenges = function (api, connection, dbConnectionMap, community, ne
         }, function (cb) {
             if (pageIndex === -1) {
                 pageIndex = 1;
-                pageSize = MAX_INT;
+                pageSize = helper.MAX_PAGE_SIZE;
             }
 
             setFilter(filter, sqlParams);
@@ -3686,7 +3686,7 @@ var getChallenges = function (api, connection, listType, isMyChallenges, next) {
       (!query.sortcolumn && (listType == api.helper.ListType.ACTIVE || listType == api.helper.ListType.UPCOMING) ? "asc" : "desc");
     sortColumn = query.sortcolumn || DEFAULT_SORT_COLUMN;
     pageIndex = Number(query.pageindex || 1);
-    pageSize = Number(query.pagesize || 150);
+    pageSize = Number(query.pagesize || helper.MAX_PAGE_SIZE);
 
     if (isMyChallenges) {
         index = copyToFilter.indexOf('type');
@@ -3727,7 +3727,7 @@ var getChallenges = function (api, connection, listType, isMyChallenges, next) {
         }, function (cb) {
             if (pageIndex === -1) {
                 pageIndex = 1;
-                pageSize = MAX_INT;
+                pageSize = helper.MAX_PAGE_SIZE;
             }
 
             setFilterV2(filter, sqlParams);
diff --git a/actions/dataScienceChallenges.js b/actions/dataScienceChallenges.js
index c84590acb..541725056 100644
--- a/actions/dataScienceChallenges.js
+++ b/actions/dataScienceChallenges.js
@@ -79,7 +79,7 @@ function pastDataScienceChallenges(pageIndex, pageSize, sortingColumnName, sorti
                                    submissionEndTo, api, connection, callback) {
     if (pageIndex === NO_PAGING) {
         pageIndex = 1;
-        pageSize = MAX_INT;
+        pageSize = helper.MAX_PAGE_SIZE;
     }
 
     var sqlParams = {};
@@ -270,7 +270,7 @@ exports.pastDataScienceChallenges = {
             async.waterfall([
                 function (cb) { // Parse and validate request parameters
                     pageIndex = Number(connection.params.pageIndex || 1);
-                    pageSize = Number(connection.params.pageSize || 50);
+                    pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE);
                     sortingOrder = connection.params.sortOrder || PAST_CHALLENGES_DEFAULT_SORT_ORDER;
                     sortingColumnName = connection.params.sortColumn || PAST_CHALLENGES_DEFAULT_SORT_COLUMN;
 
@@ -278,7 +278,7 @@ exports.pastDataScienceChallenges = {
                         || helper.checkContains(PAST_CHALLENGES_DATA_COLUMN_NAMES, sortingColumnName.toLowerCase(), "sortColumn")
                         || helper.checkPageIndex(pageIndex, "pageIndex")
                         || helper.checkPositiveInteger(pageSize, "pageSize")
-                        || helper.checkMaxInt(pageSize, 'pageSize');
+                        || helper.checkMaxNumber(pageSize,helper.MAX_PAGE_SIZE,'pageSize');
 
                     if (err) {
                         cb(err);
diff --git a/actions/marathonChallenges.js b/actions/marathonChallenges.js
index 78fd88f50..9caf28ecd 100644
--- a/actions/marathonChallenges.js
+++ b/actions/marathonChallenges.js
@@ -137,7 +137,7 @@ exports.searchMarathonChallenges = {
         sortOrder = (params.sortOrder || "asc").toLowerCase();
         sortColumn = (params.sortColumn || "roundId").toLowerCase();
         pageIndex = Number(params.pageIndex || 1);
-        pageSize = Number(params.pageSize || 50);
+        pageSize = Number(params.pageSize || helper.MAX_PAGE_SIZE);
 
         if (!_.isDefined(params.sortOrder) && sortColumn === "roundid") {
             sortOrder = "desc";
@@ -180,7 +180,7 @@ exports.searchMarathonChallenges = {
                 }
                 error = error ||
                     helper.checkMaxNumber(pageIndex, MAX_INT, "pageIndex") ||
-                    helper.checkMaxNumber(pageSize, MAX_INT, "pageSize") ||
+                    helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, "pageSize") ||
                     helper.checkPageIndex(pageIndex, "pageIndex") ||
                     helper.checkPositiveInteger(pageSize, "pageSize") ||
                     helper.checkContains(ALLOWABLE_LIST_TYPE, listType, "listType") ||
@@ -203,7 +203,7 @@ exports.searchMarathonChallenges = {
 
                 if (pageIndex === -1) {
                     pageIndex = 1;
-                    pageSize = MAX_INT;
+                    pageSize = helper.MAX_PAGE_SIZE;
                 }
                 sqlParams = {
                     firstRowIndex: (pageIndex - 1) * pageSize,
diff --git a/actions/memberSearch.js b/actions/memberSearch.js
index c17722925..bd2252c05 100755
--- a/actions/memberSearch.js
+++ b/actions/memberSearch.js
@@ -22,7 +22,7 @@ var searchUsers = function (api, connection, dbConnectionMap, next) {
         result = {},
         sqlParams = {},
         pageIndex = Number(connection.params.pageIndex || 1),
-        pageSize = Number(connection.params.pageSize || 10),
+        pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE),
         caseSensitive = (connection.params.caseSensitive || "false").toLowerCase(),
         handle = connection.params.handle;
 
@@ -36,7 +36,7 @@ var searchUsers = function (api, connection, dbConnectionMap, next) {
             var error = helper.checkPositiveInteger(pageIndex, "pageIndex") ||
                 helper.checkMaxNumber(pageIndex, helper.MAX_INT, "pageIndex") ||
                 helper.checkPositiveInteger(pageSize, "pageSize") ||
-                helper.checkMaxNumber(pageSize, 500, "pageSize") ||
+                helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, "pageSize") ||
                 helper.checkStringPopulated(handle, "handle");
             if (error) {
                 callback(error);
diff --git a/actions/payments.js b/actions/payments.js
index 9cb5bc4c3..0eb2d8dfc 100755
--- a/actions/payments.js
+++ b/actions/payments.js
@@ -73,7 +73,7 @@ var searchPayments = function (api, connection, next) {
     var error, i,
         helper = api.helper,
         pageIndex = Number(connection.params.pageIndex || 1),
-        pageSize = Number(connection.params.pageSize || 10),
+        pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE),
         status = connection.params.status,
         type = connection.params.type,
         sortColumn = (connection.params.sortColumn || "createDate").toLowerCase(),
@@ -98,7 +98,7 @@ var searchPayments = function (api, connection, next) {
             error = helper.checkPositiveInteger(pageIndex, "pageIndex")
                 || helper.checkMaxInt(pageIndex, "pageIndex")
                 || helper.checkPositiveInteger(pageSize, "pageSize")
-                || helper.checkMaxInt(pageSize, "pageSize")
+                || helper.checkMaxNumber(pageSize,helper.MAX_PAGE_SIZE,"pageSize")
                 || helper.checkMember(connection)
                 || helper.checkContains(["asc", "desc"], sortOrder.toLowerCase(), "sortOrder")
                 || helper.checkSortColumn(ALLOWABLE_SORT_COLUMN, sortColumn)
diff --git a/actions/reviewOpportunities.js b/actions/reviewOpportunities.js
index d42adc3e8..ed89b53ef 100644
--- a/actions/reviewOpportunities.js
+++ b/actions/reviewOpportunities.js
@@ -346,7 +346,7 @@ var validateInputParameter = function (helper, connection, filter, isStudio, cb)
         error;
 
     params = connection.params;
-    pageSize = Number(params.pageSize || 10);
+    pageSize = Number(params.pageSize || helper.MAX_PAGE_SIZE);
     pageIndex = Number(params.pageIndex || 1);
     sortOrder = params.sortOrder || 'asc';
     sortColumn = params.sortColumn || 'challengeName';
@@ -356,7 +356,7 @@ var validateInputParameter = function (helper, connection, filter, isStudio, cb)
     error =
         helper.checkPageIndex(pageIndex, 'pageIndex') ||
         helper.checkPositiveInteger(pageSize, 'pageSize') ||
-        helper.checkMaxInt(pageSize, 'pageSize') ||
+        helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE,'pageSize') ||
         helper.checkContains(helper.getLowerCaseList(allowedSortColumn), sortColumn.toLowerCase(), 'sortColumn') ||
         helper.checkContains(helper.getLowerCaseList(ALLOWABLE_SORT_ORDER), sortOrder.toLowerCase(), 'sortOrder');
 
@@ -481,7 +481,7 @@ var getReviewOpportunities = function (api, connection, isStudio, next) {
     var helper = api.helper, result = {}, sqlParams, dbConnectionMap = connection.dbConnectionMap, pageIndex,
         pageSize, sortOrder, sortColumn, filter = {}, reviewOpportunities, queryName;
 
-    pageSize = Number(connection.params.pageSize || 10);
+    pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE);
     pageIndex = Number(connection.params.pageIndex || 1);
     sortOrder = connection.params.sortOrder || 'asc';
     sortColumn = connection.params.sortColumn || 'challengeName';
@@ -494,7 +494,7 @@ var getReviewOpportunities = function (api, connection, isStudio, next) {
 
             if (pageIndex === -1) {
                 pageIndex = 1;
-                pageSize = helper.MAX_INT;
+                pageSize = helper.MAX_PAGE_SIZE;
             }
 
             sqlParams = {
diff --git a/actions/rounds.js b/actions/rounds.js
index b4e451a32..642435d03 100644
--- a/actions/rounds.js
+++ b/actions/rounds.js
@@ -216,7 +216,7 @@ var getRounds = function (api, connection, dbConnectionMap, next) {
     sortOrder = (params.sortOrder || "asc").toLowerCase();
     sortColumn = (params.sortColumn || "registrationPhaseStartTime").toLowerCase();
     pageIndex = Number(params.pageIndex || 1);
-    pageSize = Number(params.pageSize || 50);
+    pageSize = Number(params.pageSize || helper.MAX_PAGE_SIZE);
 
     async.waterfall([
         function (cb) {
@@ -240,7 +240,7 @@ var getRounds = function (api, connection, dbConnectionMap, next) {
                 }
             }
             error = error ||
-                helper.checkMaxNumber(pageSize, helper.MAX_INT, "pageSize") ||
+                helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, "pageSize") ||
                 helper.checkPageIndex(pageIndex, "pageIndex") ||
                 helper.checkPositiveInteger(pageSize, "pageSize") ||
                 helper.checkContains(["asc", "desc"], sortOrder, "sortOrder") ||
@@ -285,7 +285,7 @@ var getRounds = function (api, connection, dbConnectionMap, next) {
         }, function (typeIds, cb) {
             if (pageIndex === -1) {
                 pageIndex = 1;
-                pageSize = helper.MAX_INT;
+                pageSize = helper.MAX_PAGE_SIZE;
             }
 
             filterCondition = ' r.round_id > 0 ';
diff --git a/actions/srmChallenges.js b/actions/srmChallenges.js
index 5091eb5cb..41255a2a2 100644
--- a/actions/srmChallenges.js
+++ b/actions/srmChallenges.js
@@ -217,11 +217,6 @@ var DATE_FORMAT = "YYYY-MM-DD HH:mm";
  */
 var MAX_INT = 2147483647;
 
-/**
- * The default page size
- */
-var DEFAULT_PAGE_SIZE = 50;
-
 /**
  * Default number of leaders to show in SRM details
  */
@@ -265,7 +260,7 @@ exports.searchSRMChallenges = {
             sortColumn = "roundid";
         }
         pageIndex = Number(params.pageIndex || 1);
-        pageSize = Number(params.pageSize || DEFAULT_PAGE_SIZE);
+        pageSize = Number(params.pageSize || helper.MAX_PAGE_SIZE);
         listType = (params.listType || 'ACTIVE').toUpperCase();
         challengeName = _.has(params, 'challengeName') ? '%' + params.challengeName.toLowerCase() + '%' : '%';
 
@@ -287,7 +282,7 @@ exports.searchSRMChallenges = {
                 }
                 error = error ||
                     helper.checkMaxNumber(pageIndex, MAX_INT, "pageIndex") ||
-                    helper.checkMaxNumber(pageSize, MAX_INT, "pageSize") ||
+                    helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, "pageSize") ||
                     helper.checkPageIndex(pageIndex, "pageIndex") ||
                     helper.checkPositiveInteger(pageSize, "pageSize") ||
                     helper.checkContains(["asc", "desc"], sortOrder, "sortOrder") ||
@@ -301,7 +296,7 @@ exports.searchSRMChallenges = {
 
                 if (pageIndex === -1) {
                     pageIndex = 1;
-                    pageSize = MAX_INT;
+                    pageSize = helper.MAX_PAGE_SIZE;
                 }
                 sqlParams = {
                     firstRowIndex: (pageIndex - 1) * pageSize,
@@ -720,7 +715,7 @@ exports.getSRMSchedule = {
         sortColumn = (params.sortColumn || "registrationStartTime").toLowerCase();
 
         pageIndex = Number(params.pageIndex || 1);
-        pageSize = Number(params.pageSize || DEFAULT_PAGE_SIZE);
+        pageSize = Number(params.pageSize || helper.MAX_PAGE_SIZE);
 
         if (!_.isDefined(params.sortOrder) && sortColumn === "registrationstarttime") {
             sortOrder = "desc";
@@ -734,7 +729,7 @@ exports.getSRMSchedule = {
                 }
                 error = error ||
                     helper.checkMaxNumber(pageIndex, MAX_INT, "pageIndex") ||
-                    helper.checkMaxNumber(pageSize, MAX_INT, "pageSize") ||
+                    helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, "pageSize") ||
                     helper.checkPageIndex(pageIndex, "pageIndex") ||
                     helper.checkPositiveInteger(pageSize, "pageSize") ||
                     helper.checkContains(["asc", "desc"], sortOrder, "sortOrder") ||
@@ -757,7 +752,7 @@ exports.getSRMSchedule = {
 
                 if (pageIndex === -1) {
                     pageIndex = 1;
-                    pageSize = MAX_INT;
+                    pageSize = helper.MAX_PAGE_SIZE;
                 }
                 SCHEDULE_TIMEZONE = api.config.tcConfig.databaseTimezoneIdentifier;
                 cb(error);
@@ -2402,7 +2397,7 @@ function getPracticeProblems(api, connection, next) {
         myPointsUpperBound,
         caller = connection.caller,
         pageIndex = Number(connection.params.pageIndex || 1),
-        pageSize = Number(connection.params.pageSize || 10),
+        pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE),
         sortColumn = connection.params.sortColumn || 'problemId',
         sortOrder = connection.params.sortOrder || helper.consts.ASCENDING,
         exeQuery = function (query) {
@@ -2414,7 +2409,7 @@ function getPracticeProblems(api, connection, next) {
         function (cb) {
             var error = helper.checkPageIndex(pageIndex, 'pageIndex') ||
                 helper.checkPositiveInteger(pageSize, 'pageSize') ||
-                helper.checkMaxInt(pageSize, 'pageSize') ||
+                helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, 'pageSize') ||
                 helper.checkContains(['asc', 'desc'], sortOrder.toLowerCase(), 'sortOrder') ||
                 helper.checkSortColumn(VALID_PRACTICE_PROBLEMS_SORT_COLUMN, sortColumn.toLowerCase()) ||
                 helper.checkMember(connection, 'Only logged in user can access to this endpoint.');
diff --git a/actions/tops.js b/actions/tops.js
index 993a59326..7cbc35d5d 100644
--- a/actions/tops.js
+++ b/actions/tops.js
@@ -48,7 +48,7 @@ var getTops = function (api, connection, dbConnectionMap, next) {
         result = {},
         active = false;
     pageIndex = Number(connection.params.pageIndex || 1);
-    pageSize = Number(connection.params.pageSize || 50);
+    pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE);
 
     async.waterfall([
         function (cb) {
@@ -57,7 +57,7 @@ var getTops = function (api, connection, dbConnectionMap, next) {
             }
             error = error ||
                 helper.checkMaxNumber(pageIndex, MAX_INT, "pageIndex") ||
-                helper.checkMaxNumber(pageSize, MAX_INT, "pageSize") ||
+                helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, "pageSize") ||
                 helper.checkPageIndex(pageIndex, "pageIndex") ||
                 helper.checkPositiveInteger(pageSize, "pageSize") ||
                 helper.checkContains(Object.keys(helper.softwareChallengeTypes), challengeType, "challengeType");
@@ -68,7 +68,7 @@ var getTops = function (api, connection, dbConnectionMap, next) {
             active = helper.softwareChallengeTypes[challengeType].active;
             if (pageIndex === -1) {
                 pageIndex = 1;
-                pageSize = MAX_INT;
+                pageSize = helper.MAX_PAGE_SIZE;
             }
             sqlParams.firstRowIndex = (pageIndex - 1) * pageSize;
             sqlParams.pageSize = pageSize;
@@ -125,7 +125,7 @@ var getTops = function (api, connection, dbConnectionMap, next) {
 var getStudioTops = function (api, connection, dbConnectionMap, next) {
     var helper = api.helper, sqlParams = {}, pageIndex, pageSize, error, challengeType = connection.params.challengeType.toLowerCase(), result = {};
     pageIndex = Number(connection.params.pageIndex || 1);
-    pageSize = Number(connection.params.pageSize || 10);
+    pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE);
 
     async.waterfall([
         function (cb) {
@@ -137,7 +137,7 @@ var getStudioTops = function (api, connection, dbConnectionMap, next) {
             }
             error = error ||
                 helper.checkMaxNumber(pageIndex, MAX_INT, 'pageIndex') ||
-                helper.checkMaxNumber(pageSize, MAX_INT, 'pageSize') ||
+                helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, 'pageSize') ||
                 helper.checkPageIndex(pageIndex, 'pageIndex') ||
                 helper.checkPositiveInteger(pageSize, 'pageSize') ||
                 helper.checkContains(Object.keys(helper.studioChallengeTypes), challengeType, 'challengeType');
@@ -147,7 +147,7 @@ var getStudioTops = function (api, connection, dbConnectionMap, next) {
             }
             if (pageIndex === -1) {
                 pageIndex = 1;
-                pageSize = MAX_INT;
+                pageSize = helper.MAX_PAGE_SIZE;
             }
             sqlParams.firstRowIndex = (pageIndex - 1) * pageSize;
             sqlParams.pageSize = pageSize;
@@ -277,7 +277,7 @@ exports.getMarathonTops = {
             dbConnectionMap = connection.dbConnectionMap,
             result = {};
         pageIndex = Number(connection.params.pageIndex || 1);
-        pageSize = Number(connection.params.pageSize || 10);
+        pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE);
 
         async.waterfall([
             function (cb) {
@@ -287,7 +287,7 @@ exports.getMarathonTops = {
                 }
                 error = error ||
                     helper.checkMaxNumber(pageIndex, MAX_INT, "pageIndex") ||
-                    helper.checkMaxNumber(pageSize, MAX_INT, "pageSize") ||
+                    helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, "pageSize") ||
                     helper.checkPageIndex(pageIndex, "pageIndex") ||
                     helper.checkPositiveInteger(pageSize, "pageSize") ||
                     helper.checkContains(["competitors", "schools", "countries"], rankType, "rankType");
@@ -297,7 +297,7 @@ exports.getMarathonTops = {
                 }
                 if (pageIndex === -1) {
                     pageIndex = 1;
-                    pageSize = MAX_INT;
+                    pageSize = helper.MAX_PAGE_SIZE;
                 }
                 switch (rankType) {
                 case "competitors":
@@ -400,7 +400,7 @@ exports.getSRMTops = {
             return;
         }
         pageIndex = Number(connection.params.pageIndex || 1);
-        pageSize = Number(connection.params.pageSize || 10);
+        pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE);
 
         async.waterfall([
             function (cb) {
@@ -410,7 +410,7 @@ exports.getSRMTops = {
                 }
                 error = error ||
                     helper.checkMaxNumber(pageIndex, MAX_INT, "pageIndex") ||
-                    helper.checkMaxNumber(pageSize, MAX_INT, "pageSize") ||
+                    helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, "pageSize") ||
                     helper.checkPageIndex(pageIndex, "pageIndex") ||
                     helper.checkPositiveInteger(pageSize, "pageSize") ||
                     helper.checkContains(["competitors", "schools", "countries"], rankType, "rankType");
@@ -420,7 +420,7 @@ exports.getSRMTops = {
                 }
                 if (pageIndex === -1) {
                     pageIndex = 1;
-                    pageSize = MAX_INT;
+                    pageSize = helper.MAX_PAGE_SIZE;
                 }
                 switch (rankType) {
                 case "competitors":
@@ -497,11 +497,6 @@ exports.getSRMTops = {
  */
 var VALID_TRACK_TYPES = ['design', 'develop', 'data'];
 
-/**
- * Maximum page size
- */
-var MAX_PAGE_SIZE = 1000;
-
 /**
  * The API for top track members of develop, design and data.
  */
@@ -523,7 +518,7 @@ exports.getTopTrackMembers = {
         var helper = api.helper,
             trackType = connection.params.trackType.toLowerCase(),
             pageIndex = Number(connection.params.pageIndex || 1),
-            pageSize = Number(connection.params.pageSize || 50),
+            pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE),
             dbConnectionMap = connection.dbConnectionMap,
             result = {},
             error,
@@ -539,7 +534,7 @@ exports.getTopTrackMembers = {
                 }
                 error = error ||
                     helper.checkMaxNumber(pageIndex, MAX_INT, 'pageIndex') ||
-                    helper.checkMaxNumber(pageSize, MAX_PAGE_SIZE, 'pageSize') ||
+                    helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, 'pageSize') ||
                     helper.checkPageIndex(pageIndex, 'pageIndex') ||
                     helper.checkPositiveInteger(pageSize, 'pageSize') ||
                     helper.checkContains(VALID_TRACK_TYPES, trackType, 'trackType');
@@ -549,7 +544,7 @@ exports.getTopTrackMembers = {
                 }
                 if (pageIndex === -1) {
                     pageIndex = 1;
-                    pageSize = MAX_PAGE_SIZE;     // No paging, show max allowed.
+                    pageSize = helper.MAX_PAGE_SIZE;     // No paging, show max allowed.
                 }
                 // Retrieves total number of top members for the given track.
                 api.dataAccess.executeQuery('get_top_members_' + trackType + '_count', sqlParams, dbConnectionMap, cb);
diff --git a/actions/user.js b/actions/user.js
index 4c4fe7c92..c8f297fe2 100644
--- a/actions/user.js
+++ b/actions/user.js
@@ -522,7 +522,7 @@ function getUserMarathonMatches(api, connection, next) {
         },
         handle = connection.params.handle,
         pageIndex = Number(connection.params.pageIndex || 1),
-        pageSize = Number(connection.params.pageSize || 10);
+        pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE);
 
     sortOrder = (connection.params.sortOrder || "asc").toLowerCase();
     sortColumn = connection.params.sortColumn || "id";
@@ -535,7 +535,7 @@ function getUserMarathonMatches(api, connection, next) {
     }
 
     if (pageIndex === -1) {
-        pageSize = helper.MAX_INT;
+        pageSize = helper.MAX_PAGE_SIZE;
         pageIndex = 1;
     }
 
@@ -549,7 +549,7 @@ function getUserMarathonMatches(api, connection, next) {
             var error = helper.checkPageIndex(pageIndex, "pageIndex")
                 || helper.checkStringParameter(handle, "handle", 30)
                 || helper.checkPositiveInteger(pageSize, "pageSize")
-                || helper.checkMaxInt(pageSize, "pageSize")
+                || helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE,"pageSize")
                 || helper.checkContains(['asc', 'desc'], sortOrder, "sortOrder")
                 || helper.checkSortColumn(VALID_SORT_COLUMN_MARATHON_MATCH, sortColumn.toLowerCase());
             cb(error);
@@ -645,7 +645,7 @@ function getUserAlgorithmChallenges(api, connection, next) {
         },
         handle = connection.params.handle,
         pageIndex = Number(connection.params.pageIndex || 1),
-        pageSize = Number(connection.params.pageSize || 10);
+        pageSize = Number(connection.params.pageSize || helper.MAX_PAGE_SIZE);
 
     // If the sortOrder is set and sortColumn is missing.
     if (connection.params.sortOrder && !connection.params.sortColumn) {
@@ -658,7 +658,7 @@ function getUserAlgorithmChallenges(api, connection, next) {
     sortColumn = connection.params.sortColumn || "id";
 
     if (pageIndex === -1) {
-        pageSize = helper.MAX_INT;
+        pageSize = helper.MAX_PAGE_SIZE;
         pageIndex = 1;
     }
 
@@ -672,7 +672,7 @@ function getUserAlgorithmChallenges(api, connection, next) {
             var error = helper.checkPageIndex(pageIndex, "pageIndex")
                 || helper.checkStringParameter(handle, "handle", 30)
                 || helper.checkPositiveInteger(pageSize, "pageSize")
-                || helper.checkMaxInt(pageSize, "pageSize")
+                || helper.checkMaxNumber(pageSize,helper.MAX_PAGE_SIZE, "pageSize")
                 || helper.checkContains(['asc', 'desc'], sortOrder, "sortOrder")
                 || helper.checkSortColumn(VALID_SORT_COLUMN_ALGO_CHALLENGES, sortColumn.toLowerCase());
             cb(error);
diff --git a/actions/userDesignChallenges.js b/actions/userDesignChallenges.js
index 49cc7dec4..c3c07caf2 100644
--- a/actions/userDesignChallenges.js
+++ b/actions/userDesignChallenges.js
@@ -16,11 +16,6 @@ var _ = require('underscore');
 var BadRequestError = require('../errors/BadRequestError');
 var NotFoundError = require('../errors/NotFoundError');
 
-/**
- * The default pzge size.
- */
-var DEFAULT_PAGE_SIZE = 50;
-
 /**
  * The constants of project type.
  */
@@ -92,7 +87,7 @@ var getUserChallenges = function (api, connection, challengeType, next) {
     sortOrder = (params.sortOrder || "asc").toLowerCase();
     sortColumn = (params.sortColumn || "id").toLowerCase();
     pageIndex = Number(params.pageIndex || 1);
-    pageSize = Number(params.pageSize || DEFAULT_PAGE_SIZE);
+    pageSize = Number(params.pageSize || helper.MAX_PAGE_SIZE);
 
     if (!_.isDefined(params.sortOrder) && sortColumn === "id") {
         sortOrder = "desc";
@@ -109,7 +104,7 @@ var getUserChallenges = function (api, connection, challengeType, next) {
             }
             error = error ||
                 helper.checkMaxNumber(pageIndex, helper.MAX_INT, "pageIndex") ||
-                helper.checkMaxNumber(pageSize, helper.MAX_INT, "pageSize") ||
+                helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, "pageSize") ||
                 helper.checkPageIndex(pageIndex, "pageIndex") ||
                 helper.checkPositiveInteger(pageSize, "pageSize") ||
                 helper.checkContains(["asc", "desc"], sortOrder, "sortOrder") ||
diff --git a/actions/userDevelopChallenges.js b/actions/userDevelopChallenges.js
index ea9772ddb..246b993fe 100644
--- a/actions/userDevelopChallenges.js
+++ b/actions/userDevelopChallenges.js
@@ -15,10 +15,6 @@ var async = require('async');
 var _ = require('underscore');
 var BadRequestError = require('../errors/BadRequestError');
 var NotFoundError = require('../errors/NotFoundError');
-/**
- * The default pzge size.
- */
-var DEFAULT_PAGE_SIZE = 50;
 /**
  * The constants of project type.
  */
@@ -72,7 +68,7 @@ var getUserChallenges = function (api, connection, challengeType, next) {
     sortOrder = (params.sortOrder || "asc").toLowerCase();
     sortColumn = (params.sortColumn || "id").toLowerCase();
     pageIndex = Number(params.pageIndex || 1);
-    pageSize = Number(params.pageSize || DEFAULT_PAGE_SIZE);
+    pageSize = Number(params.pageSize || helper.MAX_PAGE_SIZE);
 
     if (!_.isDefined(params.sortOrder) && sortColumn === "id") {
         sortOrder = "desc";
@@ -89,7 +85,7 @@ var getUserChallenges = function (api, connection, challengeType, next) {
             }
             error = error ||
                 helper.checkMaxNumber(pageIndex, helper.MAX_INT, "pageIndex") ||
-                helper.checkMaxNumber(pageSize, helper.MAX_INT, "pageSize") ||
+                helper.checkMaxNumber(pageSize, helper.MAX_PAGE_SIZE, "pageSize") ||
                 helper.checkPageIndex(pageIndex, "pageIndex") ||
                 helper.checkPositiveInteger(pageSize, "pageSize") ||
                 helper.checkContains(["asc", "desc"], sortOrder, "sortOrder") ||
diff --git a/initializers/helper.js b/initializers/helper.js
index 198a9f05d..2acc131d8 100644
--- a/initializers/helper.js
+++ b/initializers/helper.js
@@ -204,6 +204,11 @@ helper.SUBMISSION_TYPE = {
  */
 helper.MAX_INT = 2147483647;
 
+/**
+ * Max value for page size
+ */
+helper.MAX_PAGE_SIZE = 100;
+
 /**
  * HASH KEY For Password
  *