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
211293263Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4429998978742445072812168.62017-11-21 07:09:35
History
DateUserTypeResult
2025-03-28James HeinrichF
Factor: 442999897874244507281 / TF: 68-70
2017-11-21NickF
Factor: 442999897874244507281 / TF: 68-69
2016-08-24XZTNF
no factor from 2^67 to 2^68
2015-10-14arnieNF
no factor from 2^66 to 2^67
2013-08-14lindeeNF
no factor from 2^65 to 2^66
2011-05-19CorbyguyNF
no factor from 2^64 to 2^65