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
687452089Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5219156773629559888072168.82018-07-05 09:29:48
History
DateUserTypeResult
2018-07-05ConductorF
Factor: 521915677362955988807 / TF: 68-69
2016-11-17NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-08-11sasakiNF
no factor from 2^66 to 2^67
2014-02-11america64NF
no factor from 2^65 to 2^66
2012-02-02sasaki3NF
no factor from 2^64 to 2^65
2010-03-10James HintzNF
no factor from 2^63 to 2^64