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
562013561Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4111979215271073837292168.52017-08-08 19:28:38
History
DateUserTypeResult
2025-03-07James HeinrichF
Factor: 411197921527107383729 / TF: 68-70
2017-08-08Alex_soldierF
Factor: 411197921527107383729 / TF: 68-69*
2016-12-10sasakiNF
no factor from 2^67 to 2^68
2015-11-04sasakiNF
no factor from 2^66 to 2^67
2014-05-27sasakiNF
no factor from 2^65 to 2^66
2012-03-07IIRyskIINF
no factor from 2^64 to 2^65
2010-03-05Architects CubedNF
no factor from 2^63 to 2^64