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
2890637Factored
FactorDigitsBitsDate
108139652975452459696312373.22020-08-21 00:53:27
ECM
DigitsB1Curves
255000028 / 280
Estimated T-Level: 20.5
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Fred71872F5E4B4EB1760
Verified (Factored)1999-10-21Patrick Ball71872F5E4B4EB1761397826
Verified (Factored)2018-09-27kkmrkkblmbrbk71872F5E4B4EB1762630382
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-08-21M Miller8DAEFBD5F936B56F1260760553
History
DateUserTypeResult
2020-08-21Ben DeloCERT
PRP Certification
Proof certified good
2020-08-21M MillerC-PRP
M2890637/10813965297545245969631 : 8DAEFBD5F936B56F
PRP proof power = 7
PRP: Verified
Proof certified good
2020-08-21GANF-ECM
Factor: 10813965297545245969631 / (ECM curve 7, B1=50000, B2=5000000)
2020-02-11masserNF-PM1
B1=5000000, B2=200000000, E=12
2019-10-23masserNF-PM1
B1=2900000, B2=29000000, e=12
2019-01-12chuenkitNF
no factor from 2^67 to 2^68
2018-09-27kkmrkkblmbrbkC-LL
71872F5E4B4EB176
2017-11-16Gordon SpenceNF
no factor from 2^66 to 2^67
2017-10-18JossNF-PM1
B1=597196, B2=5971960, E=6
2017-03-02JossNF-PM1
B1=298598, B2=2985980, E=6
2016-12-14JossNF-PM1
B1=248832
2016-10-27JossNF-PM1
B1=172800
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-11-28omylistNF
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
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2012-01-16markrNF
no factor from 2^61 to 2^62
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61