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
198253037Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
42139364929250977720792271.82019-05-18 12:00:23
History
DateUserTypeResult
2019-05-18Samuel SchmidtF
Factor: 4213936492925097772079 / TF: 71-72
2015-09-28Andrew BNF
no factor from 2^70 to 2^71
2015-09-26Andrew BNF
no factor from 2^69 to 2^70
2015-09-22Andrew BNF
no factor from 2^68 to 2^69
2015-09-21Andrew BNF
no factor from 2^67 to 2^68
2015-09-19Mr-PlonkNF
no factor from 2^66 to 2^67
2013-07-04Massimo Cappelli (ik5pwa)NF
no factor from 2^65 to 2^66
2011-04-27RichardNF
no factor from 2^64 to 2^65
2010-08-091997rj7NF
no factor from 2^63 to 2^64