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
803251Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 244
TF below 2^97 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 35000000
B2 = 9987494096580
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000256 / 1566
Estimated T-Level: 30.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski14860
VerifiedPaul Victor NovareseA8B5624B8D87B4860
VerifiedDieter StahelA8B5624B8D87B4860
Verified2015-04-11MadPooA8B5624B8D87B486622377
History
DateUserTypeResult
2024-02-01Ethan O'ConnorNF-PM1
B1=35000000, B2=9987494096580
2023-09-28masserNF-PP1
Start=6/5, B1=10000000, B2=790000000
2023-09-21masserNF-PP1
Start=107/47, B1=10000000, B2=790000000
2022-04-03lycornNF-PM1
B1=8027770, B2=501024934410
2021-09-13gLaussNF-PP1
Start=2/7, B1=7500000, B2=585000000
2019-11-09YxinityNF
no factor from 2^69 to 2^70
2019-11-07YxinityNF
no factor from 2^68 to 2^69
2017-06-16Smok_bmv NF
no factor from 2^67 to 2^68
2017-06-16Smok_bmv NF
no factor from 2^66 to 2^67
2017-06-16Smok_bmv NF
no factor from 2^65 to 2^66
2016-03-01lycornNF
no factor from 2^64 to 2^65
2015-11-24Sid & AndyNF-PM1
B1=8032510, B2=240975300, E=12
2015-09-26Gordon SpenceNF
no factor from 2^63 to 2^64
2015-09-26Gordon SpenceNF
no factor from 2^62 to 2^63
2015-04-11MadPooC-LL
A8B5624B8D87B486
2015-01-16snme2pm1NF
no factor from 2^61 to 2^62
2013-10-25David CampeauNF-PM1
B1=1650000, B2=56100000, E=12
2012-08-01JossNF-PM1
B1=1606502
2010-05-25Architects CubedNF
no factor from 2^60 to 2^61
2008-10-12Sturle SundeNF
no factor from 2^59 to 2^60
2008-10-12Sturle SundeNF
no factor from 2^58 to 2^59