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
687877381Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4404279392761163048092168.62018-07-06 14:32:00
History
DateUserTypeResult
2018-07-06ConductorF
Factor: 440427939276116304809 / TF: 68-69
2016-11-08NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-08-12sasakiNF
no factor from 2^66 to 2^67
2014-02-11america64NF
no factor from 2^65 to 2^66