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
721226393Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
36780278288126254334472271.62019-05-21 10:08:47
History
DateUserTypeResult
2019-05-21Daniil TsarkovF
Factor: 3678027828812625433447 / TF: 71-72
2019-05-21Daniil TsarkovNF
no factor from 2^70 to 2^71
2015-02-04monstNF
no factor from 2^66 to 2^70
2012-01-10monstNF
no factor from 2^65 to 2^66
2011-03-02monstNF
no factor from 2^64 to 2^65
2010-07-28Architects CubedNF
no factor from 2^63 to 2^64