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

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MnStatusDetails
42049463Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
193232570780380924740314287192994.02018-10-22 01:42:12
LL
StatusDateUserResidueShift
Verified (Factored)2008-10-15Harry Dijkhuis0531C2549DC5F9328318817
Verified (Factored)2017-12-02S4851220531C2549DC5F9324154354
P-1 factors
DateFactorB1B2
2018-10-221932325707803809247403142871956500011441250
History
DateUserTypeResult
2018-10-22Architects CubedF-PM1
Factor: 19323257078038092474031428719 / (P-1, B1=565000, B2=11441250, E=12)
2018-08-11-Anonymous-NF
no factor from 2^72 to 2^73
2017-12-02S485122C-LL
0531C2549DC5F932
2015-08-25-Anonymous-NF
no factor from 2^71 to 2^72
2015-02-27Mark RoseNF
no factor from 2^70 to 2^71
2015-01-17chalsallNF
no factor from 2^69 to 2^70