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
7428803Factored
FactorDigitsBitsDate
14964775942098207553661921243900469652139126.82023-03-05 15:40:05
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-07-12Pawel T. Jochym6657E738373F809F34034
Verified (Factored)2002-02-24Ars Technica Team Prime Rib6657E738373F809F504913
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2023-03-12TravisJankDA1535DC1298F5D51458895553
P-1 factors
DateFactorB1B2
2023-03-05149647759420982075536619212439004696521310000011007976980
History
DateUserTypeResult
2023-03-12curtiscCERT
PRP Certification
Proof certified good
2023-03-12TravisJankC-PRP
M7428803/149647759420982075536619212439004696521 : DA1535DC1298F5D5
PRP proof power = 8
PRP: Verified
Proof certified good
2023-03-05DRobinsonPEF-PM1
Factor: 149647759420982075536619212439004696521 / (P-1, B1=3100000, B2=11007976980)
2021-09-28SRBaseNF
no factor from 2^71 to 2^72
2016-08-16Squeeky_SquirrelNF-PM1
B1=230000, B2=5807500, E=12
2016-06-04ramgeisNF
no factor from 2^70 to 2^71
2016-06-04ramgeisNF
no factor from 2^69 to 2^70
2016-06-04ramgeisNF
no factor from 2^68 to 2^69
2016-05-28america64NF
no factor from 2^67 to 2^68
2016-05-20america64NF
no factor from 2^66 to 2^67
2015-06-21VictordeHollanderNF
no factor from 2^65 to 2^66
2013-11-25David CampeauNF
no factor from 2^64 to 2^65
2012-09-10NesowaNF-PM1
B1=85000, B2=1423750, E=6
2012-03-17David CampeauNF
no factor from 2^63 to 2^64