Marin Mersenne 2^P-1
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MnStatusDetails
2983363Factored
FactorDigitsBitsDate
269720815096040836315565272684.52021-08-07 13:11:26
ECM
DigitsB1Curves
255000084 / 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)Goffredo FonziC1B503FF170AE76A0
Verified (Factored)1999-08-31Mikio InoueC1B503FF170AE76A1823854
Verified (Factored)2018-10-20kkmrkkblmbrbkC1B503FF170AE76A1893826
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-08-08MarkS1715CCD9C1E14D9B1183013253
History
DateUserTypeResult
2021-08-08Ben DeloCERT
PRP Certification
Proof certified good
2021-08-08MarkSC-PRP
M2983363/26972081509604083631556527 : 1715CCD9C1E14D9B
PRP proof power = 7
PRP: Verified
Proof certified good
2021-08-07MarkSF-ECM
Factor: 26972081509604083631556527 / (ECM curve 5, B1=50000, B2=5000000, Sigma=1448962195977419)
2021-05-04TJAOINF
no factor from 2^68 to 2^69
2019-11-07BigBrotherNF-PM1
B1=3000000, B2=90000000, E=12
2018-12-27chuenkitNF
no factor from 2^67 to 2^68
2018-10-20kkmrkkblmbrbkC-LL
C1B503FF170AE76A
2017-12-03Gordon SpenceNF
no factor from 2^66 to 2^67
2017-07-10JossNF-PM1
B1=396800, B2=3968000, E=6
2016-06-18JossNF-PM1
B1=198400, B2=4050000, E=6
2016-02-28ramgeisNF
no factor from 2^65 to 2^66
2015-04-13lycornNF
no factor from 2^64 to 2^65
2015-04-13lycornNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-11-25Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-10-24markrNF-PM1
B1=100000, B2=2025000, E=6
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61