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 14:00Johan SannemoJohan SannemoError
Source Code

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Challenge History
DateChallengerCostTypeStatus
May 17, 2026 07:39M-Rochat10.00CustomSolution Broken
Run Statistics
#DateScoreWall TimeCPU UserCPU SystemMemoryError
1May 17, 2026 07:39011,276,67101,852,0002,121,728expected "6442459076 ", got "2147488520 "
2May 17, 2026 07:39010,744,74101,848,0002,121,728expected "6442459076 ", got "2147488520 "
3May 17, 2026 07:39011,817,71801,848,0002,121,728expected "6442459076 ", got "2147488520 "
4Jan 21, 2026 14:008,58127,243,0985,394,0002,157,0002,281,472
5Jan 21, 2026 14:008,60026,501,9745,406,0002,162,0002,285,568
6Jan 21, 2026 14:008,61524,984,0845,415,0002,166,0002,285,568