Marin Mersenne 2^P-1
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MnStatusDetails
2582071Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
11392435363925048471617512579.92020-12-15 04:59:13
ECM
DigitsB1Curves
255000073 / 280
Estimated T-Level: 21.3 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Rosario Pane1BB563805F426CBA0
Verified (Factored)1999-10-07marc schuette1BB563805F426CBA887262
Verified (Factored)2018-06-20kkmrkkblmbrbk1BB563805F426CBA2150781
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-12-15Maciej KmieciakA36B4B5D535EF1751121028353
History
DateUserTypeResult
2020-12-16Simon JosefssonCERT
PRP Certification
Proof certified good
2020-12-15Maciej KmieciakC-PRP
M2582071/1139243536392504847161751 : A36B4B5D535EF175
PRP proof power = 7
PRP: Verified
Proof certified good
2020-12-15Gerry SnyderF-ECM
Factor: 1139243536392504847161751 / (ECM curve 2, B1=50000, B2=5000000, Sigma=1705225675051597)
2019-06-29lycornNF
no factor from 2^67 to 2^68
2018-06-20kkmrkkblmbrbkC-LL
1BB563805F426CBA
2017-08-20Gordon SpenceNF
no factor from 2^66 to 2^67
2016-07-22mikrNF-PM1
B1=3200000, B2=112000000, E=12
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-08ramgeisNF
no factor from 2^65 to 2^66
2015-02-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-27VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-06-20Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-10-10markrNF-PM1
B1=175000, B2=4112500, E=6
2011-01-12JossNF-PM1
B1=50000
2010-11-14JossNF-PM1
B1=20000
2009-01-31Sturle SundeNF
no factor from 2^60 to 2^61