Marin Mersenne 2^P-1
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MnStatusDetails
3258769Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
458072922683328239543032375.32016-01-18 12:25:11
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Stephan GruppA73FAA5EBABDE0020
Verified (Factored)1999-06-06Marco Aurélio Graciotto SilvaA73FAA5EBABDE0022180411
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30alpertron0A3B7978B8D429371013
Verified2017-11-19Oliver Kruse0A3B7978B8D429371113764213
P-1 factors
DateFactorB1B2
2016-01-18458072922683328239543034158004158000
History
DateUserTypeResult
2022-04-18LordJuliusNF
no factor from 2^66 to 2^67
2022-04-18LordJuliusNF
no factor from 2^65 to 2^66
2022-04-18LordJuliusNF
no factor from 2^64 to 2^65
2022-04-18LordJuliusNF
no factor from 2^63 to 2^64
2022-04-18LordJuliusNF
no factor from 2^62 to 2^63
2022-04-18LordJuliusNF
no factor from 2^1 to 2^62
2021-12-22JossNF-PM1
B1=3258769, B2=637437570
2021-12-19JossNF-PM1
B1=3258769, B2=109008900
2021-07-12JossNF
no factor from 2^67 to 2^68
2021-07-12JossNF-PM1
B1=3258769
2021-01-18JossNF-PM1
B1=325876, B2=3258769, E=6
2020-12-25JossNF-PM1
B1=108625
2017-11-19Oliver KruseC-PRP
M3258769/45807292268332823954303 : 0A3B7978B8D42937
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M3258769/45807292268332823954303 : 0A3B7978B8D42937
PRP: Verified
PRP without proof (not generated)
2016-01-18JossF-PM1
Factor: 45807292268332823954303 / (P-1, B1=415800, B2=4158000, E=6)
2015-06-28ThaNF
no factor from 2^65 to 2^66
2015-02-18VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-18VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-07JossNF-PM1
B1=99392
2014-06-11JossNF-PM1
B1=79696
2013-01-03dbaughNF
no factor from 2^62 to 2^63
2011-09-23Grant McCrackenNF
no factor from 2^61 to 2^62
2011-09-14USAFSSNF-PM1
B1=60000, B2=1050000, E=6
2009-07-05Carsten KossendeyNF-PM1
B1=15000, B2=191250
2009-04-04S485122NF
no factor from 2^60 to 2^61