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
4971139Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 265
P-1
B1 = 7000000
B2 = 8975658510
ECM
DigitsB1Curves
2550000135 / 280
Estimated T-Level: 22.4 ⓘ
LL
StatusDateUserResidueShift
VerifiedK. Travis WalshE4933432F39803EE0
Verified2000-03-15BrianE4933432F39803EE859793
History
DateUserTypeResult
2023-02-10Sid & AndyNF-PM1
B1=5600000, B2=8093223600
2022-10-27Prism DaymonNF-PM1
B1=7000000, B2=8975658510
2021-04-26-Anonymous-NF
no factor from 2^71 to 2^72
2021-04-24-Anonymous-NF
no factor from 2^70 to 2^71
2021-04-23-Anonymous-NF
no factor from 2^69 to 2^70
2021-03-08TJAOINF
no factor from 2^68 to 2^69
2018-06-05ramgeisNF
no factor from 2^67 to 2^68
2017-05-28YxinityNF
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
2015-07-29snme2pm1NF
no factor from 2^65 to 2^66
2015-07-18mikrNF-PM1
B1=1200000, B2=43100000, E=12
2014-12-29VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-29VictordeHollanderNF
no factor from 2^63 to 2^64
2011-11-13GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-07-27Squeeky_SquirrelNF-PM1
B1=60000, B2=975000, E=6
2009-12-12markrNF
no factor from 2^61 to 2^62
2009-08-26Carsten KossendeyNF-PM1
B1=30000, B2=435000