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
299333Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 268
TF target 244
TF below 2^102 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 1000000000
B2 = 94248060376470
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000680 / 1566
Estimated T-Level: 32.2 ⓘ
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski52160
VerifiedUnknown52160
VerifiedGuillermo Ballester Valor030705B60C9252160
VerifiedEivind Triel030705B60C925216207070
Verified2001-11-24Eugene Gogol'030705B60C925216121331
History
DateUserTypeResult
2024-05-10oodairaNF-PM1
B1=1000000000, B2=94248060376470
2024-04-17oodairaNF-PM1
B1=100000000, B2=5493494776770
2023-01-30masserNF-PP1
Start=6/5, B1=20000000, B2=620000000
2023-01-28masserNF-PP1
Start=190/11, B1=20000000, B2=620000000
2023-01-22masserNF-PP1
Start=2/7, B1=20000000, B2=620000000
2022-12-27Sid & AndyNF-PM1
B1=203100000, B2=2081067288300
2022-12-02Gordon SpenceNF
no factor from 2^67 to 2^68
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2022-02-20LordJuliusNF
no factor from 2^66 to 2^67
2022-02-11lycornNF-PM1
B1=12000000, B2=503031929400
2019-05-28Gordon SpenceNF
no factor from 2^65 to 2^66
2017-08-21ConductorNF
no factor from 2^64 to 2^65
2016-01-03Gordon SpenceNF
no factor from 2^63 to 2^64
2016-01-03Gordon SpenceNF
no factor from 2^62 to 2^63
2015-08-13NRNF
no factor from 2^61 to 2^62
2013-06-11lycornNF
no factor from 2^60 to 2^61
2012-08-19markrNF-PM1
B1=12000000, B2=500000000, E=12
2011-08-01JossNF-PM1
B1=1587259
2009-01-23Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-02Sturle SundeNF
no factor from 2^58 to 2^59