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
21095911Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 240000
B2 = 3600000
LL
StatusDateUserResidueShift
Verified2004-01-07H Z Wiencek9C9FEF3698E1238C4729971
Verified2008-08-07Eric Welker9C9FEF3698E1238C17008646
History
DateUserTypeResult
2021-12-21-Anonymous-NF
no factor from 2^73 to 2^74
2021-11-26-Anonymous-NF
no factor from 2^72 to 2^73
2021-09-26-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-14SRBaseNF
no factor from 2^70 to 2^71
2018-05-03ramgeisNF
no factor from 2^69 to 2^70
2017-12-11VictordeHollanderNF
no factor from 2^68 to 2^69
2017-05-23ramgeisNF
no factor from 2^67 to 2^68
2015-04-11NRNF
no factor from 2^66 to 2^67