Marin Mersenne 2^P-1
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MnStatusDetails
2185439Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
155793050914144588775530332683.72020-01-28 11:31:48
ECM
DigitsB1Curves
2550000280 / 280
30250000166 / 640
Estimated T-Level: 26.3 ⓘ
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Mikael BillbergD62CF1778811C9ED0
Verified (Factored)1999-02-07Robert WalkerD62CF1778811C9ED1158611
Verified (Factored)2018-04-14kkmrkkblmbrbkD62CF1778811C9ED1904745
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-01-29Jinyuan Wang2323F8B9B7834BA51146266953
Verified2020-02-02roemer22012323F8B9B7834BA51204543953
History
DateUserTypeResult
2020-02-02roemer2201C-PRP
M2185439/15579305091414458877553033 : 2323F8B9B7834BA5
PRP: Verified
PRP without proof (not generated)
2020-01-29Jinyuan WangC-PRP
M2185439/15579305091414458877553033 : 2323F8B9B7834BA5
PRP: Verified
PRP without proof (not generated)
2020-01-28Alvin BunkF-ECM
Factor: 15579305091414458877553033 / (ECM curve 2, B1=50000, B2=5000000, Sigma=6563897921660750)
2019-04-15TJAOINF
no factor from 2^67 to 2^68
2018-04-14kkmrkkblmbrbkC-LL
D62CF1778811C9ED
2018-02-09mikrNF-PM1
B1=2500000, B2=125000000, E=12
2016-11-24Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-14ramgeisNF
no factor from 2^65 to 2^66
2016-01-04JossNF-PM1
B1=442872, B2=4428720, E=6
2015-03-25VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-25VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-10JossNF-PM1
B1=148738
2014-06-26-Anonymous-NF-PM1
B1=119369
2013-12-02LaurVNF
no factor from 2^62 to 2^63
2011-01-13markrNF-PM1
B1=90000, B2=1620000, E=6
2010-11-08JossNF-PM1
B1=30000
2010-11-06-Anonymous-NF-PM1
B1=15000
2009-01-06Sturle SundeNF
no factor from 2^61 to 2^62
2009-01-02Sturle SundeNF
no factor from 2^60 to 2^61