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
193199599Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4023854062399391551912168.42017-08-18 20:15:51
History
DateUserTypeResult
2025-03-24James HeinrichF
Factor: 402385406239939155191 / TF: 68-70
2017-08-18NickF
Factor: 402385406239939155191 / TF: 68-69
2016-08-03Sam DupuisNF
no factor from 2^67 to 2^68
2015-09-05NianNF
no factor from 2^66 to 2^67
2013-10-11c10ck3rNF
no factor from 2^65 to 2^66
2011-04-16dslNF
no factor from 2^64 to 2^65
2010-08-07RichardNF
no factor from 2^63 to 2^64