Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
47880061Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 272
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShift
Verified2009-03-17GuliverB38AA98B40E0B5D433343843
Verified2019-03-09rjzakB38AA98B40E0B5D44441244
History
DateUserTypeResult
2024-08-15tbusbyNF
no factor from 2^69 to 2^70
2020-10-16Sid & AndyNF-PM1
B1=1000000, B2=20000000, E=6
2019-07-21Sid & AndyNF
no factor from 2^73 to 2^74
2019-03-09rjzakC-LL
B38AA98B40E0B5D4
2018-01-07ktonyNF
no factor from 2^72 to 2^73
2015-11-04Judge HaleNF
no factor from 2^71 to 2^72
2015-09-08Sid & AndyNF
no factor from 2^70 to 2^71
2015-07-17Architects CubedNF
no factor from 2^69 to 2^70
2009-03-17GuliverC-LL
B38AA98B40E0B5D4
2008-12-16GuliverNF-PM1
B1=745000