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
658426721Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3876528931073571085912168.42016-10-19 04:00:36
History
DateUserTypeResult
2016-10-19NipalF
Factor: 387652893107357108591 / 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