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
678417583Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3778890252656426257432168.42018-05-22 22:29:22
History
DateUserTypeResult
2018-05-22ConductorF
Factor: 377889025265642625743 / TF: 68-69
2016-12-13NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-07-22sasakiNF
no factor from 2^66 to 2^67
2014-01-13sasakiNF
no factor from 2^65 to 2^66
2012-01-27HardyP GermanyNF
no factor from 2^64 to 2^65