Marin Mersenne 2^P-1
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MnStatusDetails
2093123Factored
FactorDigitsBitsDate
272072995258345835004324156039131101.12020-07-24 01:15:53
ECM
DigitsB1Curves
2550000109 / 280
Estimated T-Level: 21.9
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)John LloydAAC8AC23F3C352BD0
Verified (Factored)1999-06-06Martin SinotAAC8AC23F3C352BD1274485
Verified (Factored)2017-06-12kkmrkkblmbrbkAAC8AC23F3C352BD647753
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-07-24M Miller744EF44504F5F4971159739353
Verified2020-07-24Kirill Frolov744EF44504F5F4971150606453
Verified2020-08-05Chang Chia-Tche744EF44504F5F497115605253
History
DateUserTypeResult
2020-08-05Chang Chia-TcheC-PRP
M2093123/2720729952583458350043241560391 : 744EF44504F5F497
PRP: Verified
PRP without proof (not generated)
2020-07-24Kirill FrolovC-PRP
M2093123/2720729952583458350043241560391 : 744EF44504F5F497
PRP: Verified
PRP without proof (not generated)
2020-07-24M MillerC-PRP
M2093123/2720729952583458350043241560391 : 744EF44504F5F497
PRP: Verified
PRP without proof (not generated)
2020-07-24GANF-ECM
Factor: 2720729952583458350043241560391 / (ECM curve 1, B1=50000, B2=5000000, Sigma=5977222892767472)
2019-04-01chuenkitNF
no factor from 2^67 to 2^68
2017-06-12kkmrkkblmbrbkC-LL
AAC8AC23F3C352BD
2017-05-14mikrNF-PM1
B1=2500000, B2=125000000, E=12
2016-11-09JossNF-PM1
B1=268329
2016-11-05JossNF-PM1
B1=223608
2016-09-21Gordon SpenceNF
no factor from 2^66 to 2^67
2016-07-27JossNF-PM1
B1=186340, B2=6300000, E=12
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-06ramgeisNF
no factor from 2^65 to 2^66
2015-04-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-10VictordeHollanderNF
no factor from 2^63 to 2^64
2013-09-03ramgeisNF
no factor from 2^62 to 2^63
2012-03-23Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-19James HeinrichNF-PM1
B1=140000, B2=3150000, E=6
2011-01-09JossNF-PM1
B1=50000
2010-12-28JossNF-PM1
B1=30000
2009-07-27USAFSSNF-PM1
B1=20000, B2=260000
2009-01-03Sturle SundeNF
no factor from 2^60 to 2^61