Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
477329Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 268
TF target 244
TF below 2^98 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 71000000
B2 = 1475893929510
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000345 / 1566
Estimated T-Level: 31.1
LL
StatusDateUserResidueShift
VerifiedDavid SlowinskiF9A0
VerifiedDavid EinsteinC4E374D7E3B54F9A0
VerifiedKlaus KastensC4E374D7E3B54F9A0
VerifiedEivind TrielC4E374D7E3B54F9A411824
Verified2016-06-01MadPooC4E374D7E3B54F9A263958
History
DateUserTypeResult
2023-11-01masserNF-PM1
B1=71000000, B2=1475893929510
2023-10-31JossNF-PM1
B1=5351467, B2=20272051800
2023-10-03JossNF-PM1
B1=1000000, B2=144430245960
2023-07-22JossNF-PM1
B1=1000000, B2=67920202350
2022-12-16masserNF-PP1
Start=6/5, B1=8000000, B2=216000000
2022-12-15masserNF-PP1
Start=2/7, B1=16000000, B2=496000000
2022-12-10masserNF-PP1
Start=160/19, B1=4000000, B2=96000000
2022-11-21JossNF-PM1
B1=1000000, B2=27671143500
2022-05-26Gordon SpenceNF
no factor from 2^67 to 2^68
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-10-06BloodERazorNF
no factor from 2^66 to 2^67
2019-01-05Gordon SpenceNF
no factor from 2^65 to 2^66
2018-01-13BloodERazorNF
no factor from 2^64 to 2^65
2016-06-01MadPooC-LL
C4E374D7E3B54F9A
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-15Gordon SpenceNF
no factor from 2^63 to 2^64
2015-11-15Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-19NRNF
no factor from 2^61 to 2^62
2012-09-27markrNF-PM1
B1=10000000, B2=400000000, E=12
2012-04-18Sid & AndyNF
no factor from 2^60 to 2^61
2010-11-08Rob_DeeNF-PM1
B1=1000000, B2=2000000, E=6
2009-08-26James HintzNF-PM1
B1=500000, B2=10000000, E=12