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
21865759Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 269
P-1
B1 = 1000000
B2 = 93149868
LL
StatusDateUserResidueShift
Verified2004-04-29Vasyl OstrovskyiC328EDE28C36F4DB1420836
Verified2009-05-10TheJudgerC328EDE28C36F4DB6917292
History
DateUserTypeResult
2022-01-18Sid & AndyNF-PM1
B1=1000000, B2=93149868
2021-12-20Yves de WandelaarNF
no factor from 2^74 to 2^75
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
2017-12-04VictordeHollanderNF
no factor from 2^68 to 2^69
2017-05-30ramgeisNF
no factor from 2^67 to 2^68
2009-05-10TheJudgerC-LL
C328EDE28C36F4DB