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
251096371Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3954754793510458904172168.42018-06-02 06:29:40
History
DateUserTypeResult
2025-03-14James HeinrichF
Factor: 395475479351045890417 / TF: 68-70
2018-06-02Stanislav_KhokhrinF
Factor: 395475479351045890417 / TF: 68-69
2014-10-24caddrNF
no factor from 2^67 to 2^68
2014-10-09caddrNF
no factor from 2^66 to 2^67
2013-11-05OS1NF
no factor from 2^65 to 2^66
2011-07-26ALSNF
no factor from 2^64 to 2^65
2010-03-01Torchwood InstituteNF
no factor from 2^63 to 2^64
2010-03-01Torchwood InstituteNF
no factor from 2^62 to 2^63