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
38188979Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 271
P-1
B1 = 365000
B2 = 2737500
LL
StatusDateUserResidueShift
Verified2007-05-12John Sullivan2B65F738CA38E9C333336504
Verified2016-11-10Evgeniy Zavialov2B65F738CA38E9C313331388
History
DateUserTypeResult
2022-06-26RichD0NF
no factor from 2^72 to 2^73
2018-10-09Architects CubedNF
no factor from 2^71 to 2^72
2016-11-10Evgeniy ZavialovC-LL
2B65F738CA38E9C3
2014-12-04SWL551NF
no factor from 2^70 to 2^71
2014-10-27HBendtzNF
no factor from 2^69 to 2^70