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
37998533Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 271
P-1
B1 = 400000
B2 = 6200000
LL
StatusDateUserResidueShift
Verified2007-11-17Wayne PetrychynAEDF707635DF794E19329434
Verified2016-06-05Massimo Cappelli (ik5pwa)AEDF707635DF794E16890991
History
DateUserTypeResult
2022-07-02Sid & AndyNF
no factor from 2^72 to 2^73
2022-04-26Zhang RuichongNF
no factor from 2^71 to 2^72
2016-06-05Massimo Cappelli (ik5pwa)C-LL
AEDF707635DF794E
2014-04-01Jerry HallettNF
no factor from 2^70 to 2^71
2014-04-01Jerry HallettNF
no factor from 2^69 to 2^70