Marin Mersenne 2^P-1
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MnStatusDetails
3161647Factored
FactorDigitsBitsDate
1762754808387970506620872477.22021-02-27 07:49:52
ECM
DigitsB1Curves
255000043 / 280
Estimated T-Level: 20.8
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Michael Porter3CE44D24ABCACF680
Verified (Factored)1999-11-24Wim Simons3CE44D24ABCACF68885214
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-02-28mrh7519DC667C1830361526653
History
DateUserTypeResult
2022-02-18JossNF-PM1
B1=1000000, B2=128282700
2021-02-28Evil GeniusCERT
PRP Certification
Proof certified good
2021-02-28mrhC-PRP
M3161647/176275480838797050662087 : 7519DC667C183036
PRP proof power = 7
PRP: Verified
Proof certified good
2021-02-27ZenzomaF-ECM
Factor: 176275480838797050662087 / (ECM curve 7, B1=50000, B2=5000000, Sigma=387636953145906)
2019-07-07mikrNF-PM1
B1=3000000, B2=100000000, E=12
2019-01-21TJAOINF
no factor from 2^67 to 2^68
2017-04-22Gordon SpenceNF
no factor from 2^66 to 2^67
2015-11-26HBendtzNF-PM1
B1=500000, B2=12000000, e=12
2015-11-02JossNF-PM1
B1=552384
2015-08-10JossNF-PM1
B1=434120
2015-06-17ThaNF
no factor from 2^65 to 2^66
2015-02-11VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-11VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-25JossNF-PM1
B1=100602
2014-05-26JossNF-PM1
B1=80301
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-10-29markrNF
no factor from 2^61 to 2^62
2011-09-09Squeeky_SquirrelNF-PM1
B1=60000, B2=960000, E=6
2009-07-03Carsten KossendeyNF-PM1
B1=15000, B2=191250
2009-04-09S485122NF
no factor from 2^60 to 2^61