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
340297Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 268
TF target 244
TF below 2^101 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 85000000
B2 = 2708233958430
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000603 / 1566
Estimated T-Level: 31.9 ⓘ
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski5A760
VerifiedUnknown5A760
VerifiedGuillermo Ballester ValorE3C8C289AA28DA760
VerifiedEivind TrielE3C8C289AA28DA76274545
Verified2002-01-15Dennis PopeE3C8C289AA28DA76306069
History
DateUserTypeResult
2023-07-07JacobZNF-PM1
B1=85000000, B2=2708233958430
2023-02-02JossNF-PM1
B1=1000000, B2=27892134270
2023-01-15masserNF-PP1
Start=6/5, B1=20000000, B2=620000000
2023-01-10masserNF-PP1
Start=113/13, B1=20000000, B2=620000000
2023-01-05masserNF-PP1
Start=2/7, B1=20000000, B2=620000000
2022-07-25Gordon SpenceNF
no factor from 2^67 to 2^68
2022-07-25Gordon SpenceNF
no factor from 2^66 to 2^67
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-12-01Gordon SpenceNF
no factor from 2^65 to 2^66
2018-02-16Gordon SpenceNF
no factor from 2^64 to 2^65
2016-09-22mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2015-12-15Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-15Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-25NRNF
no factor from 2^61 to 2^62
2013-05-25Sid & AndyNF
no factor from 2^60 to 2^61
2012-02-07alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2011-08-10JossNF-PM1
B1=1344072
2009-01-24Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-30Sturle SundeNF
no factor from 2^58 to 2^59