Sum of prime numbers Andrey Tsvetkov

Compute the sum of all prime numbers in a stream of binary integers as fast as possible.

Input: 1 000 000 uint32 values in little-endian binary on STDIN (4 bytes each).

Output: The uint64 sum of all values that are prime, printed as a decimal string.

Back to listJan 21, 2026 13:19Johan SannemoJohan SannemoError
Source Code

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Challenge History
DateChallengerCostTypeStatus
May 17, 2026 13:42M-Rochat10.00CustomSolution Broken
Run Statistics
#DateScoreWall TimeCPU UserCPU SystemMemoryError
1May 17, 2026 14:00012,759,43801,881,0002,121,728expected "6442459076 ", got "2147486898 "
2May 17, 2026 14:00012,336,70901,859,0002,121,728expected "6442459076 ", got "2147486898 "
3May 17, 2026 14:00012,457,2601,848,00002,121,728expected "6442459076 ", got "2147486898 "
4Jan 21, 2026 13:198,99220,608,9876,924,000989,0002,281,472
5Jan 21, 2026 13:198,99724,137,4015,938,0001,979,0002,281,472
6Jan 21, 2026 13:199,05525,211,0415,976,0001,992,0002,502,656