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
658409027Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2121438691532328083992167.52016-10-18 17:24:57
History
DateUserTypeResult
2016-10-18NipalF
Factor: 212143869153232808399 / TF: 67-70
2014-07-01sasakiNF
no factor from 2^66 to 2^67
2014-02-23america64NF
no factor from 2^65 to 2^66