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
685655987Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5170198511356518295912168.82018-06-26 05:12:31
History
DateUserTypeResult
2018-06-26ConductorF
Factor: 517019851135651829591 / TF: 68-69
2016-12-09NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-08-04sasakiNF
no factor from 2^66 to 2^67
2014-02-07sasakiNF
no factor from 2^65 to 2^66