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
254891521Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
7788443503058807582332169.42019-04-18 11:59:40
History
DateUserTypeResult
2025-03-20James HeinrichF
Factor: 778844350305880758233 / TF: 69-70
2019-04-18NickF
Factor: 778844350305880758233 / TF: 69-70
2018-06-08Niels_Mache_NextcloudNF
no factor from 2^68 to 2^69
2015-08-19caddrNF
no factor from 2^66 to 2^68
2013-11-11sasakiNF
no factor from 2^65 to 2^66
2011-08-02RichardNF
no factor from 2^64 to 2^65
2010-03-11RichardNF
no factor from 2^63 to 2^64
2010-03-11RichardNF
no factor from 2^62 to 2^63