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
197509979Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
28370467232043564728412271.32019-05-08 21:16:59
History
DateUserTypeResult
2019-05-08manrusF
Factor: 2837046723204356472841 / TF: 71-72
2019-02-11Niels_Mache_NextcloudNF
no factor from 2^70 to 2^71
2018-12-20Chabot PrimeNF
no factor from 2^69 to 2^70
2017-09-01tmorrowNF
no factor from 2^68 to 2^69
2016-08-09XZTNF
no factor from 2^67 to 2^68
2015-09-17vwflat4NF
no factor from 2^66 to 2^67
2013-07-02Chang Chia-TcheNF
no factor from 2^65 to 2^66
2011-04-26Gordon SpenceNF
no factor from 2^64 to 2^65
2010-08-08garoNF
no factor from 2^63 to 2^64