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
688237261Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3874145204118260082892168.42018-07-08 06:34:04
History
DateUserTypeResult
2018-07-08ConductorF
Factor: 387414520411826008289 / TF: 68-69
2016-10-30NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-08-13sasakiNF
no factor from 2^66 to 2^67
2014-02-22america64NF
no factor from 2^65 to 2^66
2012-02-03mmNF
no factor from 2^64 to 2^65
2010-07-18Architects CubedNF
no factor from 2^63 to 2^64