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

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MnStatusDetails
83332723Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
288728410761570248408101132684.62017-09-30 23:42:05
P-1 factors
DateFactorB1B2
2017-09-302887284107615702484081011366500012967500
History
DateUserTypeResult
2017-09-30Sergey NosovF-PM1
Factor: 28872841076157024840810113 / (P-1, B1=665000, B2=12967500, E=12)
2017-02-19TheJudgerNF
no factor from 2^75 to 2^76
2016-12-24-Anonymous-NF
no factor from 2^74 to 2^75
2016-12-24-Anonymous-NF
no factor from 2^73 to 2^74
2016-12-24-Anonymous-NF
no factor from 2^72 to 2^73
2016-12-24-Anonymous-NF
no factor from 2^71 to 2^72
2014-03-01-Anonymous-NF
no factor from 2^70 to 2^71
2013-08-11RobishNF
no factor from 2^69 to 2^70
2013-08-11RobishNF
no factor from 2^68 to 2^69
2013-02-17jan-lukasNF
no factor from 2^67 to 2^68
2013-02-14benthomasNF
no factor from 2^66 to 2^67
2012-08-15Carsten KossendeyNF
no factor from 2^65 to 2^66
2010-12-07Architects CubedNF
no factor from 2^64 to 2^65