Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
2747671Factored
FactorDigitsBitsDate
1863552744322706241112167.32022-05-06 08:35:25
2185678139189294242982872477.52017-01-01 10:52:05
ECM
DigitsB1Curves
255000021 / 280
Estimated T-Level: 20.4
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)James P. Picotte Jr.9151BC4EA1466E130
Verified (Factored)1998-01-26James P Picotte9151BC4EA1466E130
Verified (Factored)1999-11-24Charles Dorian9151BC4EA1466E131695713
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-20Oliver KruseDA3550BE6838D8D61258289253
Verified (Factored)2017-12-05kkmrkkblmbrbkDA3550BE6838D8D6160279853
Verified2022-05-09aperson1DA3550BE6838D8D62123989753
History
DateUserTypeResult
2022-05-09Brian V.CERT
PRP Certification
Proof certified good
2022-05-09aperson1C-PRP
M2747671/186355274432270624111/218567813918929424298287 : DA3550BE6838D8D6
PRP proof power = 7
PRP: Verified
Proof certified good
2022-05-07LordJuliusNF
no factor from 2^66 to 2^67
2022-05-06TJAOIF
Factor: 186355274432270624111 / TF: 67-68
2017-12-05kkmrkkblmbrbkC-PRP
M2747671/218567813918929424298287 : DA3550BE6838D8D6
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-20Oliver KruseC-PRP
M2747671/218567813918929424298287 : DA3550BE6838D8D6
PRP: Verified (Factored)
PRP without proof (not generated)
2017-01-01bamF-ECM
Factor: 218567813918929424298287 / (ECM curve 3, B1=50000, B2=5000000)
2016-11-26mikrNF-PM1
B1=2700000, B2=84000000, E=12
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2016-02-04ramgeisNF
no factor from 2^65 to 2^66
2015-04-21VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-21VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-04-06Grant McCrackenNF
no factor from 2^61 to 2^62
2011-05-02James HeinrichNF-PM1
B1=190000, B2=4655000, E=6
2011-01-21JossNF-PM1
B1=50000
2010-12-30JossNF-PM1
B1=30000
2010-12-21JossNF-PM1
B1=20000
2009-01-27Sturle SundeNF
no factor from 2^60 to 2^61