Marin Mersenne 2^P-1
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MnStatusDetails
2132591Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
307314146010516989032064.72015-03-15 12:13:32
ECM
DigitsB1Curves
2550000280 / 280
30250000160 / 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)1997-12-13Herb SavageB2047084110B18B60
Verified (Factored)1999-01-29Jan TichýB2047084110B18B61573635
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-08Oliver Kruse5A838E409631E8201013
Verified2017-11-18kkmrkkblmbrbk5A838E409631E820158459513
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2017-11-18kkmrkkblmbrbkC-PRP
M2132591/30731414601051698903 : 5A838E409631E820
PRP: Verified
PRP without proof (not generated)
2017-10-08Oliver KruseC-PRP
M2132591/30731414601051698903 : 5A838E409631E820
PRP: Verified
PRP without proof (not generated)
2016-03-21alpertronNF-PM1
B1=500000, B2=15000000, E=12
2015-03-15VictordeHollanderF
Factor: 30731414601051698903 / TF: 64-65
2015-03-15VictordeHollanderNF
no factor from 2^63 to 2^64
2013-09-07ramgeisNF
no factor from 2^62 to 2^63
2012-04-15Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-22James HeinrichNF-PM1
B1=140000, B2=3045000, E=6
2011-01-12JossNF-PM1
B1=50000
2009-01-04Sturle SundeNF
no factor from 2^60 to 2^61