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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MnStatusDetails
38529013Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 565000
B2 = 12712500
LL
StatusDateUserResidueShift
Verified2007-07-04C. Cooper / S. BooneF251C438DA8B24F027379588
Verified2016-08-13Sergey NosovF251C438DA8B24F020750911
History
DateUserTypeResult
2022-06-12Sid & AndyNF
no factor from 2^72 to 2^73
2019-03-04monstNF
no factor from 2^71 to 2^72
2018-07-07Architects CubedNF-PM1
B1=565000, B2=12712500, E=12
2016-08-13Sergey NosovC-LL
F251C438DA8B24F0
2014-12-08monstNF
no factor from 2^70 to 2^71
2014-05-13mikrNF
no factor from 2^69 to 2^70
2013-08-22Torben K.NF
no factor from 2^68 to 2^69