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
20216221Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 700000
B2 = 163848300
LL
StatusDateUserResidueShift
Verified2004-01-07Jonathan Wright02FF18F714C684225314324
Verified2004-02-14Karl Reinsch02FF18F714C6842218893272
History
DateUserTypeResult
2022-01-14Sid & AndyNF-PM1
B1=700000, B2=163848300
2021-12-16Sid & AndyNF
no factor from 2^73 to 2^74
2021-11-21-Anonymous-NF
no factor from 2^72 to 2^73
2021-09-20-Anonymous-NF
no factor from 2^71 to 2^72
2021-02-09ViliamFNF
no factor from 2^70 to 2^71
2018-02-16ramgeisNF
no factor from 2^69 to 2^70
2017-11-05VictordeHollanderNF
no factor from 2^68 to 2^69
2017-04-29ramgeisNF
no factor from 2^67 to 2^68
2015-02-12NRNF
no factor from 2^66 to 2^67