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
671017Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 269
TF target 244
TF below 2^89 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 48000000
B2 = 686683097100
ECM
DigitsB1Curves
2550000280 / 280
30250000441 / 640
Estimated T-Level: 28.4 ⓘ
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski9E20
VerifiedRahul NaikB329914C31B689E20
Verified2002-09-22Dennis PopeB329914C31B689E2663045
Verified2015-04-11MadPooB329914C31B689E2567998
History
DateUserTypeResult
2023-09-14masserNF-PP1
Start=176/71, B1=10000000, B2=790000000
2022-10-20masserNF-PM1
B1=48000000, B2=686683097100
2022-10-16masserNF-PP1
Start=6/5, B1=10000000, B2=500000000
2022-09-03masserNF-PP1
Start=2/7, B1=4800000, B2=206400000
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2018-06-20Smok_bmv NF
no factor from 2^68 to 2^69
2017-11-03Smok_bmv NF
no factor from 2^67 to 2^68
2017-11-03Smok_bmv NF
no factor from 2^66 to 2^67
2017-08-07Smok_bmv NF
no factor from 2^65 to 2^66
2017-02-22ConductorNF
no factor from 2^64 to 2^65
2015-11-17Sid & AndyNF-PM1
B1=6710170, B2=201305100, E=12
2015-10-31Gordon SpenceNF
no factor from 2^63 to 2^64
2015-10-31Gordon SpenceNF
no factor from 2^62 to 2^63
2015-05-25lycornNF
no factor from 2^61 to 2^62
2015-04-11MadPooC-LL
B329914C31B689E2
2013-10-19David CampeauNF-PM1
B1=1380000, B2=44160000, E=12
2012-08-11JossNF-PM1
B1=1342034
2012-06-19JossNF-PM1
B1=671219
2011-09-11JossNF-PM1
B1=557297
2011-07-14JossNF-PM1
B1=334378
2010-08-13Architects CubedNF
no factor from 2^60 to 2^61
2008-10-11Sturle SundeNF
no factor from 2^59 to 2^60
2008-10-11Sturle SundeNF
no factor from 2^58 to 2^59