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
187928921Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4816660444022735061772168.72017-07-19 06:24:13
History
DateUserTypeResult
2025-03-26James HeinrichF
Factor: 481666044402273506177 / TF: 68-70
2017-07-19NickF
Factor: 481666044402273506177 / TF: 68-69
2016-07-27Eschroep LabsNF
no factor from 2^67 to 2^68
2015-08-21sasaki3NF
no factor from 2^66 to 2^67
2013-05-27Broomfield Designers.comNF
no factor from 2^65 to 2^66
2011-04-05sasaki3NF
no factor from 2^64 to 2^65
2010-07-31Torchwood InstituteNF
no factor from 2^63 to 2^64