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
687231773Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5553405592184899643292168.92018-07-04 07:29:07
History
DateUserTypeResult
2018-07-04ConductorF
Factor: 555340559218489964329 / TF: 68-69
2016-11-23NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-08-08sasakiNF
no factor from 2^66 to 2^67
2014-02-24america64NF
no factor from 2^65 to 2^66
2011-12-29america64NF
no factor from 2^64 to 2^65