Marin Mersenne 2^P-1
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MnStatusDetails
3347677Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
44886170611826660690035358632891.92021-06-18 12:57:32
ECM
DigitsB1Curves
255000039 / 280
Estimated T-Level: 20.7 ⓘ
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-03-03Jörg ThomsenE35CADA9AC4992670
Verified (Factored)1999-08-31Robert PerkinsE35CADA9AC4992672051826
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-06-18kutens1EB0A0B68810D9371176172653
History
DateUserTypeResult
2022-04-08JossNF-PM1
B1=1000000, B2=115661700
2021-06-18curtiscCERT
PRP Certification
Proof certified good
2021-06-18kutensC-PRP
M3347677/4488617061182666069003535863 : 1EB0A0B68810D937
PRP proof power = 7
PRP: Verified
Proof certified good
2021-06-18RIHATECF-ECM
Factor: 4488617061182666069003535863 / (ECM curve 3, B1=50000, B2=5000000, Sigma=1519558319890961)
2020-09-04mikrNF-PM1
B1=4000000, B2=150000000, E=12
2018-10-29TJAOINF
no factor from 2^67 to 2^68
2017-03-03Gordon SpenceNF
no factor from 2^66 to 2^67
2016-03-03ramgeisNF
no factor from 2^65 to 2^66
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-02-11VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-11VictordeHollanderNF
no factor from 2^63 to 2^64
2012-12-14Squeeky_SquirrelNF-PM1
B1=230000, B2=6670000, E=12
2012-11-15GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-10-10USAFSSNF-PM1
B1=55000, B2=907500, E=6
2011-08-23markrNF
no factor from 2^61 to 2^62
2009-07-05Carsten KossendeyNF-PM1
B1=15000, B2=206250
2009-03-29S485122NF
no factor from 2^60 to 2^61