User blog comment:Carbonite 0/Prestige Change/@comment-166.137.88.46-20130919142138/@comment-5007614-20130919161410

Basically you need like 250K+ XP to reach level "MAX", which is effectively Level 61. You'll get 5 Stars for hitting "MAX". Your XP bar turns blue in color, after which it only needs 200K XP to fill up.