Marin Mersenne 2^P-1
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MnStatusDetails
3471989Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
6594898773885969552819292479.12012-02-16 18:09:54
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-07-21Terry S. ArnoldFDB8650B05881DDE0
Verified (Factored)1999-06-26Ivan ClarkeFDB8650B05881DDE219333
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-07Oliver KruseF058FD032FA47C321182705653
Verified2017-12-16kkmrkkblmbrbkF058FD032FA47C321314911553
History
DateUserTypeResult
2022-09-07JossNF-PM1
B1=1094396, B2=216458550
2022-05-24LordJuliusNF
no factor from 2^66 to 2^67
2022-05-24LordJuliusNF
no factor from 2^65 to 2^66
2022-05-24LordJuliusNF
no factor from 2^64 to 2^65
2022-05-24LordJuliusNF
no factor from 2^63 to 2^64
2022-05-24LordJuliusNF
no factor from 2^62 to 2^63
2022-05-24LordJuliusNF
no factor from 2^1 to 2^62
2022-01-25JossNF-PM1
B1=1094396, B2=114656850
2021-06-13JossNF
no factor from 2^67 to 2^68
2021-03-18JossNF-PM1
B1=347198, B2=3471989, E=6
2021-03-01JossNF
no factor from 2^65 to 2^66
2017-12-16kkmrkkblmbrbkC-PRP
M3471989/659489877388596955281929 : F058FD032FA47C32
PRP: Verified
PRP without proof (not generated)
2017-11-07Oliver KruseC-PRP
M3471989/659489877388596955281929 : F058FD032FA47C32
PRP: Verified
PRP without proof (not generated)
2012-02-16GrunwalderGIMPF-ECM
Factor: 659489877388596955281929
2011-11-11USAFSSNF-PM1
B1=60000, B2=990000, E=6
2011-07-28Grant McCrackenNF
no factor from 2^61 to 2^62
2009-07-06Carsten KossendeyNF-PM1
B1=20000, B2=235000
2009-03-20S485122NF
no factor from 2^60 to 2^61