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
38825077Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 272
P-1
B1 = 1000000
B2 = 30000000
LL
StatusDateUserResidueShift
Verified2008-05-10Kenneth CollinsB2A34B7C388AD008934093
Verified2016-09-05Sergey NosovB2A34B7C388AD00824448434
History
DateUserTypeResult
2021-02-21-Anonymous-NF
no factor from 2^74 to 2^75
2021-01-11megavinkNF-PM1
B1=1000000, B2=30000000
2020-02-02-Anonymous-NF
no factor from 2^73 to 2^74
2019-10-11LaurVNF
no factor from 2^72 to 2^73
2019-04-21monstNF
no factor from 2^71 to 2^72
2016-09-05Sergey NosovC-LL
B2A34B7C388AD008
2014-12-07chalsallNF
no factor from 2^70 to 2^71
2014-11-30Mark RoseNF
no factor from 2^69 to 2^70
2013-08-25Le ComteNF
no factor from 2^68 to 2^69