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
39858037Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 272
P-1
B1 = 410000
B2 = 3382500
LL
StatusDateUserResidueShift
Verified2007-12-31Ilya NaumovFF73EAF5E26CE88D6873222
Verified2015-09-22frolyarFF73EAF5E26CE88D25264278
History
DateUserTypeResult
2020-01-31-Anonymous-NF
no factor from 2^73 to 2^74
2019-10-11-Anonymous-NF
no factor from 2^72 to 2^73
2019-05-26monstNF
no factor from 2^71 to 2^72
2015-09-22frolyarC-LL
FF73EAF5E26CE88D
2014-12-161997rj7NF
no factor from 2^70 to 2^71
2014-12-13NickOfTimeNF
no factor from 2^69 to 2^70
2013-10-03Torben K.NF
no factor from 2^68 to 2^69