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
38618539Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 272
P-1
B1 = 510000
B2 = 9945000
LL
StatusDateUserResidueShift
Verified2009-11-25-Anonymous-F6E0E4405460113326725145
Verified2015-09-19frolyarF6E0E4405460113321407135
History
DateUserTypeResult
2020-11-17-Anonymous-NF
no factor from 2^74 to 2^75
2020-01-31-Anonymous-NF
no factor from 2^73 to 2^74
2019-10-27Architects CubedNF-PM1
B1=510000, B2=9945000, E=12
2019-10-18-Anonymous-NF
no factor from 2^72 to 2^73
2019-03-19monstNF
no factor from 2^71 to 2^72
2015-09-19frolyarC-LL
F6E0E44054601133
2014-12-04NickOfTimeNF
no factor from 2^70 to 2^71
2014-10-28mikrNF
no factor from 2^69 to 2^70
2013-08-16krackerNF
no factor from 2^68 to 2^69
2009-11-25-Anonymous-C-LL
F6E0E44054601133