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
368047Factored
FactorDigitsBitsDate
672669596180116740536159488574001734112.42019-04-07 08:15:03
ECM
DigitsB1Curves
2550000280 / 280
30250000638 / 640
Estimated T-Level: 30.0 ⓘ
TF below 2^95 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski24840
Verified (Factored)Klaus Kastens2F7204BF5BD464840
Verified (Factored)Jon Grantham2F7204BF5BD464840
Verified (Factored)Eivind Triel2F7204BF5BD46484215239
Verified (Factored)2016-06-01MadPoo2F7204BF5BD46484217352
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-04-08matzetoniDEF46B4B6CE2ECED132255153
Verified2019-04-08Chang Chia-TcheDEF46B4B6CE2ECED128549853
History
DateUserTypeResult
2019-04-08Chang Chia-TcheC-PRP
M368047/6726695961801167405361594885740017 : DEF46B4B6CE2ECED
PRP: Verified
PRP without proof (small exponent)
2019-04-08matzetoniC-PRP
M368047/6726695961801167405361594885740017 : DEF46B4B6CE2ECED
PRP: Verified
PRP without proof (small exponent)
2019-04-07alexF-ECM
Factor: 6726695961801167405361594885740017 / (ECM curve 388, B1=250000, B2=25000000, Sigma=1457676444300811)
2018-02-22Gordon SpenceNF
no factor from 2^64 to 2^65
2018-02-13BloodERazorNF
no factor from 2^64 to 2^65
2016-12-06mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2016-06-01MadPooC-LL
2F7204BF5BD46484
2015-12-24Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-24Gordon SpenceNF
no factor from 2^62 to 2^63
2015-08-13NRNF
no factor from 2^61 to 2^62
2013-05-01lycornNF
no factor from 2^60 to 2^61
2012-03-13alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2012-03-05JossNF-PM1
B1=1517713
2011-08-17JossNF-PM1
B1=1214170
2009-01-24Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-05Sturle SundeNF
no factor from 2^58 to 2^59