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
323371Composite: 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 = 34677551358450
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000709 / 1566
Estimated T-Level: 32.3 ⓘ
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski54A00
VerifiedUnknown54A00
VerifiedGuillermo Ballester ValorA89BBC4A62D254A00
VerifiedEivind TrielA89BBC4A62D254A0141186
Verified2002-01-15Dennis PopeA89BBC4A62D254A0144972
History
DateUserTypeResult
2023-01-07masserNF-PP1
Start=6/5, B1=20000000, B2=620000000
2023-01-01masserNF-PP1
Start=163/19, B1=20000000, B2=620000000
2022-12-30masserNF-PP1
Start=2/7, B1=20000000, B2=620000000
2022-10-11Oliver KruseNF-PM1
B1=1000000000, B2=34677551358450
2022-06-17Gordon SpenceNF
no factor from 2^67 to 2^68
2022-05-31LordJuliusNF
no factor from 2^66 to 2^67
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-11-24Gordon SpenceNF
no factor from 2^65 to 2^66
2018-01-22Gordon SpenceNF
no factor from 2^64 to 2^65
2016-07-04mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2015-12-10Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-10Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-22NRNF
no factor from 2^61 to 2^62
2012-04-27David CampeauNF
no factor from 2^60 to 2^61
2012-01-18alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2011-08-06JossNF-PM1
B1=1435990
2009-01-24Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-01Sturle SundeNF
no factor from 2^58 to 2^59