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
686738081Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3981143001118860084232168.42018-06-30 19:24:22
History
DateUserTypeResult
2018-06-30ConductorF
Factor: 398114300111886008423 / TF: 68-69
2016-12-02NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-08-06sasakiNF
no factor from 2^66 to 2^67
2014-02-10america64NF
no factor from 2^65 to 2^66