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
38142749Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 271
P-1
B1 = 450000
B2 = 10575000
LL
StatusDateUserResidueShift
Verified2007-09-28macogimpsB5F16C08E8AD83389509241
Verified2015-09-02fxusersB5F16C08E8AD833824262162
History
DateUserTypeResult
2022-06-29Sid & AndyNF
no factor from 2^72 to 2^73
2018-11-26Architects CubedNF
no factor from 2^71 to 2^72
2015-09-02fxusersC-LL
B5F16C08E8AD8338
2014-12-01BdotNF
no factor from 2^70 to 2^71
2014-10-21HBendtzNF
no factor from 2^69 to 2^70
2013-08-07krackerNF
no factor from 2^68 to 2^69