diff --git a/packages/package-version-parser/package-version-parser-tests.js b/packages/package-version-parser/package-version-parser-tests.js
index a55e499230..b934f88b9c 100644
--- a/packages/package-version-parser/package-version-parser-tests.js
+++ b/packages/package-version-parser/package-version-parser-tests.js
@@ -153,16 +153,19 @@ Tinytest.add(
     };
 
     compare("1.0.0", "1.2.0", "<");
-    compare("1.0.0_200", "1.2.0", "<");
+    compare("1.0.0_50", "1.0.1", "<");
+    compare("1.0.0_50", "1.2.0", "<");
     compare("1.0.0_1", "1.0.0_2", "<");
     compare("1.0.0_2", "1.0.0_10", "<"); // verify that we compare ~N as numbers, not strings
     compare("1.0.0", "1.0.0_2", "<");
-    compare("1.123.0_123", "3.0.0_2", "<");
+    compare("1.99.0_99", "3.0.0_2", "<");
+    compare("1.99.0", "2.0.0", "<");
     compare("1.0.0_5", "1.0.0_2", ">");
-    compare("1.0.0_200", "1.2.0", "<");
+    compare("1.0.0_99", "1.2.0", "<");
+    compare("1.0.0_99", "1.0.1", "<");
     compare("1.0.0_1", "1.0.0_2", "<");
     compare("1.0.0", "1.0.0_2", "<");
-    compare("1.123.0_123", "3.0.0_2", "<");
+    compare("1.99.0_99", "3.0.0_2", "<");
 
     compare("1.0.0_5", "1.0.0_2", ">");
     compare("1.0.0", "1.0.0", "=");
diff --git a/tools/package-version-parser.js b/tools/package-version-parser.js
index 93ae270eb9..0374c4d9a8 100644
--- a/tools/package-version-parser.js
+++ b/tools/package-version-parser.js
@@ -59,7 +59,7 @@ var extractSemverPart = function (versionString) {
 //
 // [* XXX!] We don't quite satisfy the uniqueness and comparison properties in
 // these cases:
-// 1. If any of the version parts are greater than 250 (pretty unlikely?)
+// 1. If any of the version parts are greater than 100 (pretty unlikely?)
 // 2. If we're dealing with a prerelease version, we only look at the
 //    first two characters of each prerelease part. So, "1.0.0-beta" and
 //    "1.0.0-bear" will have the same magnitude.
@@ -75,11 +75,11 @@ PV.versionMagnitude = function (versionString) {
   var version = extractSemverPart(versionString);
   var v = semver.parse(version.semver);
 
-  return v.major * 250 * 250 * 250 +
-    v.minor * 250 * 250 +
-    v.patch * 250 +
-    version.wrapNum +
-    prereleaseIdentifierToFraction(v.prerelease);
+  return v.major * 100 * 100 +
+    v.minor * 100 +
+    v.patch +
+    version.wrapNum / 100 +
+    prereleaseIdentifierToFraction(v.prerelease) / 100 / 100;
 };
 
 // Accepts an array, eg ["rc", 2, 3]. Returns a number in the range