Marin Mersenne 2^P-1
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MnStatusDetails
2557171Factored
FactorDigitsBitsDate
13794604933821759676173132580.22021-06-15 21:12:50
ECM
DigitsB1Curves
2550000123 / 280
Estimated T-Level: 22.2
TF below 2^69 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Szymon Krzysztof LobockiA4BDC578A751B0F00
Verified (Factored)1999-04-13Galen CharltonA4BDC578A751B0F0928749
Verified (Factored)2018-06-13kkmrkkblmbrbkA4BDC578A751B0F02524322
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-06-16mrh17A0D65B37A4EE231155401353
History
DateUserTypeResult
2021-06-16b3gCERT
PRP Certification
Proof certified good
2021-06-16mrhC-PRP
M2557171/1379460493382175967617313 : 17A0D65B37A4EE23
PRP proof power = 7
PRP: Verified
Proof certified good
2021-06-15daveward2005F-ECM
Factor: 1379460493382175967617313 / (ECM curve 7, B1=50000, B2=5000000, Sigma=5745663382102691)
2021-05-27TJAOINF
no factor from 2^68 to 2^69
2019-04-29TJAOINF
no factor from 2^67 to 2^68
2018-06-13kkmrkkblmbrbkC-LL
A4BDC578A751B0F0
2017-08-10Gordon SpenceNF
no factor from 2^66 to 2^67
2016-04-12mikrNF-PM1
B1=3200000, B2=112000000, E=12
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-08omylistNF
no factor from 2^65 to 2^66
2015-02-23VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-23VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2011-12-26c10ck3rNF
no factor from 2^61 to 2^62
2011-04-11James HeinrichNF-PM1
B1=175000, B2=4068750, E=6
2011-01-09JossNF-PM1
B1=50000
2011-01-03JossNF-PM1
B1=30000
2010-12-21JossNF-PM1
B1=20000
2009-02-01Sturle SundeNF
no factor from 2^60 to 2^61