Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
256011583Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
13916924533569153434092270.22019-10-21 17:57:10
History
DateUserTypeResult
2025-04-14James HeinrichF
Factor: 1391692453356915343409 / TF: 70-71
2019-10-21Smok_bmv F
Factor: 1391692453356915343409 / TF: 70-71*
2019-04-20Chabot PrimeNF
no factor from 2^69 to 2^70
2018-06-11ANONYMOUSNF
no factor from 2^68 to 2^69
2016-04-09caddrNF
no factor from 2^67 to 2^68
2014-02-11riccardo ubertiNF
no factor from 2^66 to 2^67
2013-11-28riccardo ubertiNF
no factor from 2^65 to 2^66
2011-08-05RichardNF
no factor from 2^64 to 2^65
2010-03-08subgeniusNF
no factor from 2^63 to 2^64
2010-03-08subgeniusNF
no factor from 2^62 to 2^63