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
658985423Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
9984992138066289442312169.82016-10-21 17:31:56
History
DateUserTypeResult
2016-10-21NipalF
Factor: 998499213806628944231 / TF: 67-70
2014-07-07sasakiNF
no factor from 2^66 to 2^67
2014-02-23america64NF
no factor from 2^65 to 2^66