Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
101247193Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3895405585050041655796320012788.32020-11-24 22:54:48
P-1 factors
DateFactorB1B2
2020-11-2438954055850500416557963200175000025000000
History
DateUserTypeResult
2020-11-24ky0urakuF-PM1
Factor: 389540558505004165579632001 / (P-1, B1=750000, B2=25000000)
2020-09-29ktonyNF
no factor from 2^75 to 2^76
2020-09-29Richard ThomasNF
no factor from 2^74 to 2^75
2020-03-30SRBaseNF
no factor from 2^73 to 2^74
2020-03-21el groccoNF
no factor from 2^72 to 2^73
2015-01-03SMoffatNF
no factor from 2^71 to 2^72
2014-07-21SMoffatNF
no factor from 2^70 to 2^71
2014-07-16SMoffatNF
no factor from 2^69 to 2^70
2014-05-11NoWhereManNF
no factor from 2^68 to 2^69
2014-05-08NoWhereManNF
no factor from 2^67 to 2^68
2014-05-03Per JessenNF
no factor from 2^66 to 2^67
2012-04-14Mr-PlonkNF
no factor from 2^65 to 2^66
2010-08-12Torchwood InstituteNF
no factor from 2^64 to 2^65
2010-04-071997rj7NF
no factor from 2^63 to 2^64