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
681936917Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4170643169899785548892168.52018-06-05 19:18:52
History
DateUserTypeResult
2018-06-05ConductorF
Factor: 417064316989978554889 / TF: 68-69
2016-10-23sasakiNF
no factor from 2^67 to 2^68
2014-07-29sasakiNF
no factor from 2^66 to 2^67
2014-01-24sasakiNF
no factor from 2^65 to 2^66