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
2633261Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 271
TF target 263
TF below 2^74 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 20000000
B2 = 46841191320
ECM
DigitsB1Curves
2550000212 / 280
Estimated T-Level: 23.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedDarin MartinA331DD6848DCF7DF0
Verified1999-05-02Rene BrandenburgerA331DD6848DCF7DF711625
Verified2018-07-10kkmrkkblmbrbkA331DD6848DCF7DF236975
History
DateUserTypeResult
2023-07-02kurlyNF-PM1
B1=20000000, B2=46841191320
2023-06-02JossNF-PM1
B1=1000000, B2=2987444460
2022-12-05JossNF-PM1
B1=1000000, B2=449428980
2019-11-01masserNF-PM1
B1=2640000, B2=26400000, E=12
2018-07-10kkmrkkblmbrbkC-LL
A331DD6848DCF7DF
2017-04-22JossNF-PM1
B1=360000, B2=3600000, E=6
2016-12-27JossNF-PM1
B1=206388
2016-12-26JossNF-PM1
B1=171990
2016-12-24JossNF-PM1
B1=143325
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-12-27ramgeisNF
no factor from 2^70 to 2^71
2014-03-08Never Odd Or EvenNF
no factor from 2^69 to 2^70
2014-03-08Never Odd Or EvenNF
no factor from 2^68 to 2^69
2014-03-08Never Odd Or EvenNF
no factor from 2^67 to 2^68
2014-03-08Never Odd Or EvenNF
no factor from 2^66 to 2^67
2014-03-08Never Odd Or EvenNF
no factor from 2^65 to 2^66
2013-10-22David CampeauNF
no factor from 2^64 to 2^65
2012-06-08lycornNF
no factor from 2^61 to 2^64
2011-01-18James HeinrichNF-PM1
B1=180000, B2=4275000, E=6
2009-06-20USAFSSNF-PM1
B1=30000, B2=420000
2009-01-27Sturle SundeNF
no factor from 2^60 to 2^61