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
197980253Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
96538000045145959553272273.02019-05-27 13:08:24
History
DateUserTypeResult
2019-05-27ConductorF
Factor: 9653800004514595955327 / TF: 73-74
2019-05-22La GüiraNF
no factor from 2^72 to 2^73
2019-05-16Joe S.NF
no factor from 2^71 to 2^72
2019-02-10Niels_Mache_NextcloudNF
no factor from 2^70 to 2^71
2018-12-22Chabot PrimeNF
no factor from 2^69 to 2^70
2017-09-06rmaximusNF
no factor from 2^68 to 2^69
2016-08-10XZTNF
no factor from 2^67 to 2^68
2015-09-19ANONYMOUSNF
no factor from 2^66 to 2^67
2013-07-03sasaki3NF
no factor from 2^65 to 2^66
2011-04-25Mr-PlonkNF
no factor from 2^64 to 2^65
2010-08-08RichardNF
no factor from 2^63 to 2^64