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
43009649Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 276
TF target 272
P-1
B1 = 1200000
B2 = 30000000
LL
StatusDateUserResidueShift
Verified2009-05-09davidcrossA26E2081D7978B7B23832251
Verified2018-02-18jasheldoA26E2081D7978B7B38319024
History
DateUserTypeResult
2024-06-25GregNF
no factor from 2^69 to 2^70
2021-02-27-Anonymous-NF
no factor from 2^75 to 2^76
2021-02-26-Anonymous-NF
no factor from 2^74 to 2^75
2020-01-24-Anonymous-NF
no factor from 2^73 to 2^74
2018-12-25-Anonymous-NF
no factor from 2^72 to 2^73
2018-06-13mikrNF-PM1
B1=1200000, B2=30000000, E=12
2018-02-18jasheldoC-LL
A26E2081D7978B7B
2015-09-11fre_gamesNF
no factor from 2^71 to 2^72
2015-05-01Mark RoseNF
no factor from 2^70 to 2^71
2015-03-01krackerNF
no factor from 2^69 to 2^70
2009-05-09davidcrossC-LL
A26E2081D7978B7B