Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
155801917No known factors, not tested for primality
TF
No factors below 278
TF target 278
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-08-13GPU Factoringtrial factoring0.00 % 2025-08-20
History
DateUserTypeResult
2025-05-28Kamil GorskiNF
no factor from 2^77 to 2^78
2024-12-03James HeinrichNF
no factor from 2^76 to 2^77
2024-10-07James HeinrichNF
no factor from 2^76 to 2^77
2024-08-15SRBaseNF
no factor from 2^75 to 2^76
2024-05-06GregNF
no factor from 2^71 to 2^72
2023-03-06SRBaseNF
no factor from 2^74 to 2^75
2021-11-15SRBaseNF
no factor from 2^73 to 2^74
2017-07-02kevshawNF
no factor from 2^72 to 2^73
2016-08-10Josh FamestadNF
no factor from 2^71 to 2^72
2016-07-17guruNF
no factor from 2^70 to 2^71
2016-07-17guruNF
no factor from 2^69 to 2^70
2016-07-17guruNF
no factor from 2^68 to 2^69
2016-05-05subgeniusNF
no factor from 2^67 to 2^68
2015-04-12Ralf F.NF
no factor from 2^66 to 2^67
2013-02-05tscNF
no factor from 2^65 to 2^66
2011-01-24c10ck3rNF
no factor from 2^64 to 2^65