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
568609Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 268
TF target 244
TF below 2^96 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 70000000
B2 = 3515943120690
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000162 / 1566
Estimated T-Level: 30.5
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski36E0
VerifiedMischa KennEE31E5A5362E436E0
Verified2002-06-23Dennis PopeEE31E5A5362E436E298359
Verified2015-04-11MadPooEE31E5A5362E436E392780
History
DateUserTypeResult
2023-10-31linamentNF-PM1
B1=70000000, B2=3515943120690
2023-07-28JossNF-PM1
B1=4428164, B2=67085068050
2023-02-11JossNF-PM1
B1=4428164, B2=29089910850
2022-12-11masserNF-PP1
Start=2/7, B1=16000000, B2=496000000
2022-12-08masserNF-PP1
Start=6/5, B1=8000000, B2=216000000
2022-12-05masserNF-PP1
Start=85/29, B1=4000000, B2=164000000
2022-11-22JossNF-PM1
B1=4428164, B2=10092332250
2022-04-26Gordon SpenceNF
no factor from 2^67 to 2^68
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-03-15YxinityNF
no factor from 2^66 to 2^67
2019-04-14alexNF-PM1
B1=10000000, B2=400000000, E=12
2018-06-04chuenkitNF
no factor from 2^65 to 2^66
2017-11-17BloodERazorNF
no factor from 2^64 to 2^65
2016-02-23Mark RoseNF
no factor from 2^60 to 2^61
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-24mikrNF-PM1
B1=8628955, B2=371045062, E=12
2015-10-22Bruno VictalNF-PM1
B1=1600000, B2=66000000, E=12
2015-09-15Gordon SpenceNF
no factor from 2^63 to 2^64
2015-09-15Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-12NRNF
no factor from 2^61 to 2^62
2015-04-11MadPooC-LL
EE31E5A5362E436E
2013-10-08David CampeauNF-PM1
B1=1145000, B2=30915000, E=12
2012-03-05JossNF-PM1
B1=863472
2011-08-20JossNF-PM1
B1=690778
2011-07-01JossNF-PM1
B1=414466