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
666505493Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4121905922800493842972168.52018-03-04 19:47:21
History
DateUserTypeResult
2018-03-04ConductorF
Factor: 412190592280049384297 / TF: 68-69
2017-02-14sasakiNF
no factor from 2^67 to 2^68
2014-05-04sasakiNF
no factor from 2^66 to 2^67
2010-03-05Architects CubedNF
no factor from 2^65 to 2^66
2010-03-05Architects CubedNF
no factor from 2^64 to 2^65