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
658702879Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5217412738716360409912168.82016-10-26 04:03:01
History
DateUserTypeResult
2016-10-26NipalF
Factor: 521741273871636040991 / TF: 67-70
2014-07-03sasakiNF
no factor from 2^66 to 2^67
2014-02-23america64NF
no factor from 2^65 to 2^66