Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2953571Factored
FactorDigitsBitsDate
307975058544222247511992374.72020-09-14 12:48:09
ECM
DigitsB1Curves
255000020 / 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)Kim KrĀger-MonsenE10F09944109C4470
Verified (Factored)Cornelius CaesarE10F09944109C4470
Verified (Factored)2015-11-14MadPooE10F09944109C447990784
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-09-16Sébastien BROUCKE022FD725F9E99E1A1235727553
Verified2020-09-20nordi022FD725F9E99E1A185499653
Verified2020-09-21Wentao Huang022FD725F9E99E1A1211491053
History
DateUserTypeResult
2020-09-21Ben DeloCERT
PRP Certification
Proof certified good
2020-09-21Wentao HuangC-PRP
M2953571/30797505854422224751199 : 022FD725F9E99E1A
PRP proof power = 7
PRP: Verified
Proof certified good
2020-09-20nordiC-PRP
M2953571/30797505854422224751199 : 022FD725F9E99E1A
PRP: Verified
PRP without proof (not generated)
2020-09-16Sébastien BROUCKEC-PRP
M2953571/30797505854422224751199 : 022FD725F9E99E1A
PRP: Verified
PRP without proof (not generated)
2020-09-14GANF-ECM
Factor: 30797505854422224751199 / (ECM curve 2, B1=50000, B2=5000000, Sigma=4596334274559612)
2018-12-24chuenkitNF
no factor from 2^67 to 2^68
2017-11-28Gordon SpenceNF
no factor from 2^66 to 2^67
2016-09-05JossNF-PM1
B1=1072727, B2=22000000, E=12
2016-02-26ramgeisNF
no factor from 2^65 to 2^66
2015-11-14MadPooC-LL
E10F09944109C447
2015-05-08VictordeHollanderNF-PM1
B1=1000000, B2=20000000, E=12
2015-05-01JossNF-PM1
B1=975207
2015-04-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-27VictordeHollanderNF
no factor from 2^63 to 2^64
2015-04-08JossNF-PM1
B1=805957
2015-03-29JossNF-PM1
B1=732689
2015-03-14JossNF-PM1
B1=605529
2015-03-12JossNF-PM1
B1=550481
2015-03-02JossNF-PM1
B1=500438
2015-02-25JossNF-PM1
B1=454944
2015-02-04JossNF-PM1
B1=413586
2015-02-01JossNF-PM1
B1=187994
2015-01-31JossNF-PM1
B1=170904
2015-01-26JossNF-PM1
B1=141244
2014-11-12JossNF-PM1
B1=116731
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-12-18markrNF
no factor from 2^61 to 2^62
2010-11-02markrNF-PM1
B1=95000, B2=1995000, E=6
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61