Marin Mersenne 2^P-1
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MnStatusDetails
2935171Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
48120491325835970917800412582.02021-07-29 12:16:39
ECM
DigitsB1Curves
255000083 / 280
Estimated T-Level: 21.5 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-04-27Norm ChamberlainEFF4427BFBF083330
Verified (Factored)1999-05-23Scott LillyEFF4427BFBF083331884686
Verified (Factored)2018-10-08kkmrkkblmbrbkEFF4427BFBF083332262709
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-08-01/r/counting129C4B24F7A24A3A1182509853
History
DateUserTypeResult
2021-08-01mikeblasCERT
PRP Certification
Proof certified good
2021-08-01/r/countingC-PRP
M2935171/4812049132583597091780041 : 129C4B24F7A24A3A
PRP proof power = 7
PRP: Verified
Proof certified good
2021-07-29rushynF-ECM
Factor: 4812049132583597091780041 / (ECM curve 1, B1=50000, B2=5000000, Sigma=123643884011697)
2021-05-24TJAOINF
no factor from 2^68 to 2^69
2018-12-21chuenkitNF
no factor from 2^67 to 2^68
2018-10-08kkmrkkblmbrbkC-LL
EFF4427BFBF08333
2017-11-23Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2016-02-16YxinityNF
no factor from 2^65 to 2^66
2015-04-29VictordeHollanderNF-PM1
B1=1000000, B2=20000000, E=12
2015-04-25VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-25VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-10dbaughNF
no factor from 2^62 to 2^63
2012-01-03markrNF
no factor from 2^61 to 2^62
2010-11-08markrNF-PM1
B1=105000, B2=2283750, E=6
2009-02-12Sturle SundeNF
no factor from 2^60 to 2^61