Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
488844121Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
421664433526618063602792375.22025-09-14 08:33:21
History
DateUserTypeResult
2025-09-14SRBaseF
Factor: 42166443352661806360279 / TF: 75-76
2023-12-28SRBaseNF
no factor from 2^74 to 2^75
2022-07-02SRBaseNF
no factor from 2^73 to 2^74
2021-03-07SRBaseNF
no factor from 2^72 to 2^73
2020-08-22SRBaseNF
no factor from 2^71 to 2^72
2020-05-31SRBaseNF
no factor from 2^70 to 2^71
2018-12-19Niels_Mache_NextcloudNF
no factor from 2^69 to 2^70
2018-05-05sasakiNF
no factor from 2^68 to 2^69
2016-07-06sasakiNF
no factor from 2^67 to 2^68
2016-04-01sasakiNF
no factor from 2^66 to 2^67
2014-10-22sasaki3NF
no factor from 2^65 to 2^66