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
3191849Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 271
TF target 264
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 10200000
B2 = 19598847450
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedRichard Heijnen1A8CA11965B440F00
Verified1999-05-30jakab1A8CA11965B440F02107735
History
DateUserTypeResult
2025-07-14Architects CubedNF
no factor from 2^70 to 2^71
2023-03-19Sid & AndyNF-PM1
B1=10200000, B2=19598847450
2022-11-18TJAOINF
no factor from 2^69 to 2^70
2021-07-29MadPooNF
no factor from 2^68 to 2^69
2019-11-03mikrNF-PM1
B1=4000000, B2=150000000, E=12
2018-12-24TJAOINF
no factor from 2^67 to 2^68
2017-04-30Gordon SpenceNF
no factor from 2^66 to 2^67
2016-05-17JossNF-PM1
B1=346029, B2=6228522, E=6
2015-12-07Squeeky_SquirrelNF-PM1
B1=155000, B2=3913750, E=6
2015-06-21ThaNF
no factor from 2^65 to 2^66
2015-02-15VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-15VictordeHollanderNF
no factor from 2^63 to 2^64
2014-11-01JossNF-PM1
B1=105754
2014-08-21JossNF-PM1
B1=85645
2013-01-03dbaughNF
no factor from 2^62 to 2^63
2011-10-19markrNF
no factor from 2^61 to 2^62
2009-04-08S485122NF
no factor from 2^60 to 2^61