Marin Mersenne 2^P-1
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MnStatusDetails
3183079Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
136813848008659742909992373.52016-03-18 01:39:29
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Stephen Wood9E8F79F17529743C0
Verified (Factored)1999-06-06James Johnston9E8F79F17529743C628682
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-11-01Oliver KruseEB0B044E7672F0391175301953
Verified2017-12-12kkmrkkblmbrbkEB0B044E7672F0391176101453
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-10-11featherfactor ECM smallC1S20.00 % 2025-10-12
P-1 factors
DateFactorB1B2
2016-03-181368138480086597429099965186111733498
History
DateUserTypeResult
2022-04-02LordJuliusNF
no factor from 2^66 to 2^67
2021-12-22JossNF-PM1
B1=3183079, B2=637437570
2021-12-19JossNF-PM1
B1=3183079, B2=108997350
2021-07-11JossNF
no factor from 2^67 to 2^68
2021-07-11JossNF-PM1
B1=3183079
2021-01-18JossNF-PM1
B1=318307, B2=3183079, E=6
2021-01-08JossNF
no factor from 2^65 to 2^66
2017-12-12kkmrkkblmbrbkC-PRP
M3183079/13681384800865974290999 : EB0B044E7672F039
PRP: Verified
PRP without proof (not generated)
2017-11-01Oliver KruseC-PRP
M3183079/13681384800865974290999 : EB0B044E7672F039
PRP: Verified
PRP without proof (not generated)
2016-03-18JossF-PM1
Factor: 13681384800865974290999 / (P-1, B1=651861, B2=11733498, E=6)
2015-12-02JossNF-PM1
B1=543218
2015-11-30JossNF-PM1
B1=493835
2015-11-24JossNF-PM1
B1=448941
2015-06-18ThaNF
no factor from 2^65 to 2^66
2015-02-15VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-15VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-29JossNF-PM1
B1=100328
2014-06-01JossNF-PM1
B1=80164
2013-01-03dbaughNF
no factor from 2^62 to 2^63
2011-10-17Grant McCrackenNF
no factor from 2^61 to 2^62
2011-09-12Squeeky_SquirrelNF-PM1
B1=60000, B2=975000, E=6
2009-07-03Carsten KossendeyNF-PM1
B1=15000, B2=191250
2009-04-08S485122NF
no factor from 2^60 to 2^61