Marin Mersenne 2^P-1
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MnStatusDetails
4986809Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
3372728371240014325512168.22016-10-17 09:24:58
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)1998-06-28Luke Welsh7455E9C278DCC9E20
Verified (Factored)2000-10-28d4n13l7455E9C278DCC9E23351038
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbkDEED96B46F49FF111013
Verified2018-04-22ATHDEED96B46F49FF111382419613
P-1 factors
DateFactorB1B2
2016-10-17337272837124001432551188859458546412
History
DateUserTypeResult
2018-04-22ATHC-PRP
M4986809/337272837124001432551 : DEED96B46F49FF11
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4986809/337272837124001432551 : DEED96B46F49FF11
PRP: Verified
PRP without proof (not generated)
2016-10-17Ismo LaitelaF-PM1
Factor: 337272837124001432551 / (P-1, B1=1888594, B2=58546412, E=12)
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-31snme2pm1NF
no factor from 2^65 to 2^66
2014-12-29VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-29VictordeHollanderNF
no factor from 2^63 to 2^64
2011-11-13GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-08-01Squeeky_SquirrelNF-PM1
B1=60000, B2=990000, E=6
2009-11-29markrNF
no factor from 2^61 to 2^62
2009-09-01Carsten KossendeyNF-PM1
B1=30000, B2=450000