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
215131771Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
11385495446649130069212269.92018-05-19 03:41:40
History
DateUserTypeResult
2025-03-28James HeinrichF
Factor: 1138549544664913006921 / TF: 69-70
2018-05-19Smok_bmv F
Factor: 1138549544664913006921 / TF: 69-70*
2017-12-27NickNF
no factor from 2^68 to 2^69
2016-09-07DerekNF
no factor from 2^67 to 2^68
2015-10-18brainboostNF
no factor from 2^66 to 2^67
2012-07-08america64NF
no factor from 2^65 to 2^66
2011-05-27RichardNF
no factor from 2^64 to 2^65