Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnStatusDetails
2361581Factored
FactorDigitsBitsDate
14194948358249070298872270.32021-01-28 05:54:29
ECM
DigitsB1Curves
2550000118 / 280
Estimated T-Level: 22.1
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Jerry R. WinesA796FE5EA25EE0940
Verified (Factored)Brian J. BeesleyA796FE5EA25EE0940
Verified (Factored)2015-11-15MadPooA796FE5EA25EE0941533285
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-01-30Sébastien BROUCKE12BA2F5ECF3CD8BD176750653
Verified2021-01-31marssystems12BA2F5ECF3CD8BD1227945653
History
DateUserTypeResult
2021-01-31curtiscCERT
PRP Certification
Proof certified good
2021-01-31marssystemsC-PRP
M2361581/1419494835824907029887 : 12BA2F5ECF3CD8BD
PRP proof power = 7
PRP: Verified
Proof certified good
2021-01-30Sébastien BROUCKEC-PRP
M2361581/1419494835824907029887 : 12BA2F5ECF3CD8BD
PRP: Verified
PRP without proof (not generated)
2021-01-28daveward2005F-ECM
Factor: 1419494835824907029887 / (ECM curve 2, B1=50000, B2=5000000, Sigma=2098719507543933)
2019-04-22TJAOINF
no factor from 2^67 to 2^68
2017-06-13Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-15MadPooC-LL
A796FE5EA25EE094
2015-10-29ramgeisNF
no factor from 2^65 to 2^66
2015-08-25mikrNF-PM1
B1=3000000, B2=100000000, E=12
2015-03-09VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-09VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-22JossNF-PM1
B1=144358
2014-08-07JossNF-PM1
B1=117179
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-05-30Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-22Oscar ÖstlinNF-PM1
B1=90000, B2=1822500, E=6
2010-12-23Oscar ÖstlinNF-PM1
B1=75011
2010-11-03JossNF-PM1
B1=20000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61