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
210212267Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4220987781385029364732168.52017-11-07 07:18:33
History
DateUserTypeResult
2025-03-23James HeinrichF
Factor: 422098778138502936473 / TF: 68-70
2017-11-07AlissonF
Factor: 422098778138502936473 / TF: 68-69
2016-08-05XZTNF
no factor from 2^67 to 2^68
2015-09-30rob147147NF
no factor from 2^66 to 2^67
2013-08-11sasaki3NF
no factor from 2^65 to 2^66
2011-05-18Damian SilvestreNF
no factor from 2^64 to 2^65