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
672496681Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4092151210215844226092168.52018-04-06 12:20:03
History
DateUserTypeResult
2018-04-06ConductorF
Factor: 409215121021584422609 / TF: 68-69
2017-01-07NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-07-17sasakiNF
no factor from 2^66 to 2^67
2013-12-26sasakiNF
no factor from 2^65 to 2^66