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
374321Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 268
TF target 244
TF below 2^130 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 76000000
B2 = 2198738582040
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001363 / 9201
Estimated T-Level: 40.7 ⓘ
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski12410
VerifiedJames Young085D57AAC25F12410
VerifiedEivind Triel085D57AAC25F1241245358
Verified2002-01-08Dennis Pope085D57AAC25F1241249751
History
DateUserTypeResult
2023-07-18JacobZNF-PM1
B1=76000000, B2=2198738582040
2023-02-06JossNF-PM1
B1=1000000, B2=28509731250
2023-01-17masserNF-PP1
Start=6/5, B1=20000000, B2=620000000
2023-01-15masserNF-PP1
Start=170/23, B1=20000000, B2=620000000
2023-01-07masserNF-PP1
Start=2/7, B1=20000000, B2=640000000
2022-11-11Gordon SpenceNF
no factor from 2^67 to 2^68
2022-09-11LordJuliusNF
no factor from 2^66 to 2^67
2019-11-28Gordon SpenceNF
no factor from 2^65 to 2^66
2018-02-06BloodERazorNF
no factor from 2^64 to 2^65
2016-12-16mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2015-11-22Gordon SpenceNF
no factor from 2^63 to 2^64
2015-11-22Gordon SpenceNF
no factor from 2^62 to 2^63
2015-08-13NRNF
no factor from 2^61 to 2^62
2013-01-27Sid & AndyNF
no factor from 2^60 to 2^61
2012-08-13alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2011-01-14Oscar ÖstlinNF-PM1
B1=2200000, B2=55000000, E=12
2010-10-31Oscar ÖstlinNF-PM1
B1=2097169
2009-01-24Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-06Sturle SundeNF
no factor from 2^58 to 2^59