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

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MnStatusDetails
101279609Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
129528045655990916462769785683180134110.02020-12-14 17:30:51
P-1 factors
DateFactorB1B2
2020-12-14129528045655990916462769785683180184500017533750
History
DateUserTypeResult
2020-12-14Sergey NosovF-PM1
Factor: 1295280456559909164627697856831801 / (P-1, B1=845000, B2=17533750, E=12)
2020-09-30LOBESNF
no factor from 2^75 to 2^76
2020-09-30Mikhail KominNF
no factor from 2^74 to 2^75
2020-03-29SRBaseNF
no factor from 2^73 to 2^74
2020-03-21el groccoNF
no factor from 2^72 to 2^73
2015-02-05SMoffatNF
no factor from 2^71 to 2^72
2014-10-13SMoffatNF
no factor from 2^70 to 2^71
2014-10-10SMoffatNF
no factor from 2^69 to 2^70
2013-09-02SMoffatNF
no factor from 2^68 to 2^69
2013-08-30SMoffatNF
no factor from 2^67 to 2^68
2013-08-28SMoffatNF
no factor from 2^66 to 2^67
2012-04-14Andrew BNF
no factor from 2^65 to 2^66
2010-08-13RichardNF
no factor from 2^64 to 2^65
2010-02-221997rj7NF
no factor from 2^63 to 2^64