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
195146489Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4191237206683455229672168.52017-08-28 22:14:37
History
DateUserTypeResult
2025-03-14James HeinrichF
Factor: 419123720668345522967 / TF: 68-70
2017-08-28NickF
Factor: 419123720668345522967 / TF: 68-69
2016-08-11rubikvn2100NF
no factor from 2^67 to 2^68
2015-09-11RDbrvnNF
no factor from 2^66 to 2^67
2013-06-23GrunwalderGIMPNF
no factor from 2^65 to 2^66
2011-04-20dslNF
no factor from 2^64 to 2^65
2010-08-06OS1NF
no factor from 2^63 to 2^64