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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
421038649Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
556604919043483139965272375.62025-09-14 08:37:00
History
DateUserTypeResult
2025-09-14SRBaseF
Factor: 55660491904348313996527 / TF: 75-76
2023-11-26SRBaseNF
no factor from 2^74 to 2^75
2022-05-17SRBaseNF
no factor from 2^73 to 2^74
2021-02-09SRBaseNF
no factor from 2^72 to 2^73
2020-08-09SRBaseNF
no factor from 2^71 to 2^72
2020-05-29SRBaseNF
no factor from 2^70 to 2^71
2018-11-28sasakiNF
no factor from 2^69 to 2^70
2017-11-08sasakiNF
no factor from 2^68 to 2^69
2014-08-06sasakiNF
no factor from 2^66 to 2^68
2014-07-05tscNF
no factor from 2^65 to 2^66
2010-10-23Architects CubedNF
no factor from 2^64 to 2^65
2010-03-19Architects CubedNF
no factor from 2^63 to 2^64