Marin Mersenne 2^P-1
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MnStatusDetails
3155017Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
887069961076449759192066.32009-07-03 21:42:13
ECM
DigitsB1Curves
255000089 / 280
Estimated T-Level: 21.6 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-02-08Chris Nash629C6F85F90E18740
Verified (Factored)1999-05-30bart pastoor629C6F85F90E18741338138
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-31Oliver KruseF8D92872340D037C192857653
Verified2017-12-12kkmrkkblmbrbkF8D92872340D037C1185411653
History
DateUserTypeResult
2022-03-24LordJuliusNF
no factor from 2^65 to 2^66
2022-02-09JossNF-PM1
B1=1000000, B2=119912100
2021-12-12JossNF
no factor from 2^68 to 2^69
2021-07-05JossNF
no factor from 2^67 to 2^68
2021-01-12JossNF
no factor from 2^64 to 2^65
2021-01-07JossNF
no factor from 2^63 to 2^64
2021-01-06JossNF
no factor from 2^62 to 2^63
2021-01-06JossNF-PM1
B1=315501, B2=3155017, E=6
2021-01-04JossNF
no factor from 2^61 to 2^62
2017-12-12kkmrkkblmbrbkC-PRP
M3155017/88706996107644975919 : F8D92872340D037C
PRP: Verified
PRP without proof (not generated)
2017-10-31Oliver KruseC-PRP
M3155017/88706996107644975919 : F8D92872340D037C
PRP: Verified
PRP without proof (not generated)
2009-07-03Carsten KossendeyF-PM1
Factor: 88706996107644975919
2009-04-11S485122NF
no factor from 2^60 to 2^61