Marin Mersenne 2^P-1
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MnStatusDetails
3130789Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
4939362241230032513937884092788.72018-12-27 07:01:59
ECM
DigitsB1Curves
255000015 / 280
Estimated T-Level: 20.3 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-02-01Dean Allison5F8211A5C5A0E0A60
Verified (Factored)1999-11-10Louis Towles5F8211A5C5A0E0A62106611
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-12-27Oliver KruseFC5E9F19027ACC0F1114216153
Verified2018-12-28marssystemsFC5E9F19027ACC0F1280768253
P-1 factors
DateFactorB1B2
2018-12-2749393622412300325139378840930000000
History
DateUserTypeResult
2021-12-22JossNF-PM1
B1=3130789, B2=637437570
2021-12-19JossNF-PM1
B1=3130789, B2=108997350
2021-08-06JossNF-PM1
B1=3130789
2021-02-25JossNF
no factor from 2^67 to 2^68
2021-01-03JossNF
no factor from 2^65 to 2^66
2018-12-28marssystemsC-PRP
M3130789/493936224123003251393788409 : FC5E9F19027ACC0F
PRP: Verified
PRP without proof (not generated)
2018-12-27Oliver KruseC-PRP
M3130789/493936224123003251393788409 : FC5E9F19027ACC0F
PRP: Verified
PRP without proof (not generated)
2018-12-27mikrF-PM1
Factor: 493936224123003251393788409 / (P-1, B1=3000000)
2018-07-16JossNF-PM1
B1=672144, B2=4032864
2018-07-15JossNF-PM1
B1=672144, B2=2688576
2017-04-15Gordon SpenceNF
no factor from 2^66 to 2^67
2016-10-01Squeeky_SquirrelNF-PM1
B1=195000, B2=5460000, E=12
2015-06-14ThaNF
no factor from 2^65 to 2^66
2015-02-11VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-11VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-11-13Grant McCrackenNF
no factor from 2^61 to 2^62
2011-09-03Squeeky_SquirrelNF-PM1
B1=105000, B2=2152500, E=6
2009-07-03Carsten KossendeyNF-PM1
B1=15000, B2=183750
2009-04-14S485122NF
no factor from 2^60 to 2^61