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
19479001Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 4000000
B2 = 5984493900
LL
StatusDateUserResidueShift
Verified2004-02-07C. Cooper / S. Boone2B88A1D9609D35EE6494259
Verified2008-03-05Karl Siegemund2B88A1D9609D35EE14270874
History
DateUserTypeResult
2025-03-07alpertronNF-PM1
B1=4000000, B2=5984493900
2024-10-15Sid & AndyNF-PM1
B1=1100000, B2=461601000
2021-11-26-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-01-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-13SRBaseNF
no factor from 2^70 to 2^71
2020-01-02James HeinrichNF-PM1
B1=395000, B2=8393750, E=12
2019-12-08lycornNF
no factor from 2^69 to 2^70
2017-11-24ramgeisNF
no factor from 2^68 to 2^69
2014-04-21NesowaNF
no factor from 2^67 to 2^68
2014-04-21NesowaNF
no factor from 2^66 to 2^67