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
2243887Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 262
TF below 2^82 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 9800000
B2 = 50382735480
ECM
DigitsB1Curves
2550000280 / 280
30250000164 / 640
Estimated T-Level: 26.3 ⓘ
LL
StatusDateUserResidueShift
VerifiedMischa Kenn6824F06AE889FF0A0
Verified1999-04-13William Galway6824F06AE889FF0A643311
Verified2018-04-22kkmrkkblmbrbk6824F06AE889FF0A1934665
History
DateUserTypeResult
2023-08-15Sid & AndyNF-PM1
B1=9800000, B2=50382735480
2023-05-28JossNF-PM1
B1=1000000, B2=3800026230
2023-02-20Architects CubedNF
no factor from 2^69 to 2^70
2022-11-28JossNF-PM1
B1=1000000, B2=571741170
2021-07-05TJAOINF
no factor from 2^68 to 2^69
2019-04-01TJAOINF
no factor from 2^67 to 2^68
2018-04-22kkmrkkblmbrbkC-LL
6824F06AE889FF0A
2016-12-29Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-12-05Alexander DubrovinNF-PM1
B1=1000000, B2=21000000, E=12
2015-12-05Alexander DubrovinNF-PM1
B1=1000000, B2=14000000, E=12
2015-12-04Alexander DubrovinNF-PM1
B1=1000000, B2=7000000, E=12
2015-10-26ramgeisNF
no factor from 2^65 to 2^66
2015-03-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-10VictordeHollanderNF
no factor from 2^63 to 2^64
2014-08-25-Anonymous-NF-PM1
B1=128604
2013-12-04LaurVNF
no factor from 2^62 to 2^63
2012-05-03Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-07markrNF-PM1
B1=100000, B2=2075000, E=6
2010-11-11JossNF-PM1
B1=30000
2009-01-16Sturle SundeNF
no factor from 2^60 to 2^61