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

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MnStatusDetails
73959727Factored
FactorDigitsBitsDate
641917569806994185582685174617860196937122.32015-10-28 22:02:35
P-1 factors
DateFactorB1B2
2015-10-28641917569806994185582685174617860196973000016060000
History
DateUserTypeResult
2015-10-28SuperbobF-PM1
Factor: 6419175698069941855826851746178601969 / (P-1, B1=730000, B2=16060000, E=6)
2015-10-07Judge HaleNF
no factor from 2^72 to 2^73
2015-05-17srow7NF
no factor from 2^71 to 2^72
2013-08-06RobishNF
no factor from 2^70 to 2^71
2011-04-19-Anonymous-NF
no factor to 2^70
2010-12-31ekrummeNF
no factor from 2^67 to 2^68
2010-12-27blackivoryNF
no factor from 2^66 to 2^67
2010-12-16Sid & AndyNF
no factor from 2^65 to 2^66
2010-12-12-Anonymous-NF
no factor from 2^64 to 2^65