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
21765977Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 799000
B2 = 42438000
LL
StatusDateUserResidueShift
Verified2004-08-20Kirk Tuminaro5025C64815FFF44E7255654
Verified2009-02-252knarf5025C64815FFF44E18572777
History
DateUserTypeResult
2022-01-10linamentNF-PM1
B1=799000, B2=42438000
2021-10-02TheJudgerNF
no factor from 2^73 to 2^74
2021-09-06TheJudgerNF
no factor from 2^72 to 2^73
2021-09-06TheJudgerNF
no factor from 2^71 to 2^72
2021-09-06TheJudgerNF
no factor from 2^70 to 2^71
2018-05-03ramgeisNF
no factor from 2^69 to 2^70
2017-11-28VictordeHollanderNF
no factor from 2^68 to 2^69
2017-05-28ramgeisNF
no factor from 2^67 to 2^68
2009-02-252knarfC-LL
5025C64815FFF44E