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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MnStatusDetails
5085019Factored
FactorDigitsBitsDate
2140028442396735109872092872787.52017-07-30 12:49:25
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-10-11INTERSHOP Communications1283B79B4075EDAE0
Verified (Factored)2000-07-17Victor Lembryk1283B79B4075EDAE1746380
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-28alpertron58454F973BA6D70F1013
Verified2018-01-19kkmrkkblmbrbk58454F973BA6D70F1386191613
P-1 factors
DateFactorB1B2
2017-07-3021400284423967351098720928720000000
History
DateUserTypeResult
2018-01-19kkmrkkblmbrbkC-PRP
M5085019/214002844239673510987209287 : 58454F973BA6D70F
PRP: Verified
PRP without proof (not generated)
2017-09-28alpertronC-PRP
M5085019/214002844239673510987209287 : 58454F973BA6D70F
PRP: Verified
PRP without proof (not generated)
2017-07-30mikrF-PM1
Factor: 214002844239673510987209287 / (P-1, B1=2000000)
2016-05-24Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^61
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-08-03snme2pm1NF
no factor from 2^65 to 2^66
2014-09-15monstNF
no factor from 2^64 to 2^65
2014-09-01krackerNF
no factor from 2^63 to 2^64
2009-08-22USAFSSNF-PM1
B1=55000, B2=907500, E=6
2009-07-27GrunwalderGIMPNF
no factor from 2^1 to 2^63
2008-12-28Sturle SundeNF
no factor from 2^61 to 2^62