Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

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MnStatusDetails
197218757Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
56914668551047424573932272.32019-04-11 04:26:55
History
DateUserTypeResult
2019-04-11Smok_bmv F
Factor: 5691466855104742457393 / TF: 72-73*
2019-03-25La GüiraNF
no factor from 2^71 to 2^72
2019-02-15Niels_Mache_NextcloudNF
no factor from 2^70 to 2^71
2018-12-19sasakiNF
no factor from 2^69 to 2^70
2017-09-05el groccoNF
no factor from 2^68 to 2^69
2016-08-07XZTNF
no factor from 2^67 to 2^68
2015-09-17Judge HaleNF
no factor from 2^66 to 2^67
2013-07-06RichardNF
no factor from 2^65 to 2^66
2011-04-24Lukin DmitryNF
no factor from 2^64 to 2^65
2010-08-08sasaki3NF
no factor from 2^63 to 2^64