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
686786131Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4066390519373821200712168.52018-07-01 03:43:18
History
DateUserTypeResult
2018-07-01ConductorF
Factor: 406639051937382120071 / 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