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
2461993Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^77 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 8800000
B2 = 45521259630
ECM
DigitsB1Curves
2550000265 / 280
Estimated T-Level: 24.7 ⓘ
LL
StatusDateUserResidueShift
VerifiedJerome Forissier34F95B26BF5E0F0A0
Verified1999-05-02David Phillips34F95B26BF5E0F0A208059
Verified2018-05-27kkmrkkblmbrbk34F95B26BF5E0F0A761926
History
DateUserTypeResult
2024-05-03TJAOINF
no factor from 2^69 to 2^70
2023-09-03Sid & AndyNF-PM1
B1=8800000, B2=45521259630
2023-05-31JossNF-PM1
B1=1000000, B2=4152520680
2023-01-01JossNF-PM1
B1=1000000, B2=548467920
2021-07-12TJAOINF
no factor from 2^68 to 2^69
2019-07-01TJAOINF
no factor from 2^67 to 2^68
2018-05-27kkmrkkblmbrbkC-LL
34F95B26BF5E0F0A
2017-07-15Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-26ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-16mikrNF-PM1
B1=2382500, B2=85770100, E=12
2014-09-02JossNF-PM1
B1=121070
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-06-07Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-20Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-11-19JossNF-PM1
B1=20000
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61