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

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MnStatusDetails
489957619Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
656784824953435146566872375.82025-09-15 07:59:03
History
DateUserTypeResult
2025-09-15SRBaseF
Factor: 65678482495343514656687 / TF: 75-76
2023-12-29SRBaseNF
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
2020-09-01SRBaseNF
no factor from 2^71 to 2^72
2020-06-06SRBaseNF
no factor from 2^70 to 2^71
2016-07-28ramgeisNF
no factor from 2^69 to 2^70
2015-12-19BloodIceNF
no factor from 2^66 to 2^69
2014-10-23subgeniusNF
no factor from 2^65 to 2^66