Earned on 23 Oct 2012 for solving Problem 1. Times 2 - START HERE.
Earned on 12 Dec 2012 for commenting on Solution 114145.
Earned on 11 Dec 2012 for liking Solution 61106.
Earned on 12 Dec 2012 for creating Problem 1119. sum of non-primes.
Solve a problem first.
Earned on 1 Jul 2014 for solving all the problems in CUP Challenge.
Solve a problem with a best solution.
Earned on 29 Feb 2016 for having 50 or more solvers for Problem 1119. sum of non-primes.
Solve all the problems in Tiles Challenge problem group.
Solve all the problems in ASEE Challenge problem group.
Solve all the problems in Cody Challenge problem group.
Create 10 problems.
Solve 500 problems.
Solve all the problems in Modeling and Simulation Challenge problem group.
Solve all the problems in Magic Numbers problem group.
Must receive 25 total likes for the problems you created.
Must receive 50 total likes for the solutions you submitted.
Must receive 10 likes for a solution you submitted.
Must receive 10 likes for a problem you created.
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