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
211562543Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
5337245344721574913132168.92017-11-18 12:55:54
6488586976926013933212169.12025-03-28 12:01:56
History
DateUserTypeResult
2025-03-28James HeinrichF
Factors: 648858697692601393321,533724534472157491313 / TF: 68-70
2017-11-18NickF
Factor: 533724534472157491313 / TF: 68-69
2016-08-25XZTNF
no factor from 2^67 to 2^68
2015-10-14vwflat4NF
no factor from 2^66 to 2^67
2013-08-15David CampeauNF
no factor from 2^65 to 2^66
2011-05-20Jonathan A ZylstraNF
no factor from 2^64 to 2^65