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
20826613Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 800000
B2 = 260668980
LL
StatusDateUserResidueShift
Verified2004-02-23Lincoln CooperCF28BA0A554F68783293432
Verified2009-05-07TheJudgerCF28BA0A554F68782072002
History
DateUserTypeResult
2022-01-13Sid & AndyNF-PM1
B1=800000, B2=260668980
2021-12-16-Anonymous-NF
no factor from 2^73 to 2^74
2021-11-12-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-01-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-14SRBaseNF
no factor from 2^70 to 2^71
2018-05-25ramgeisNF
no factor from 2^69 to 2^70
2017-10-08VictordeHollanderNF
no factor from 2^68 to 2^69
2017-04-25ramgeisNF
no factor from 2^67 to 2^68
2015-03-29NRNF
no factor from 2^66 to 2^67
2009-05-07TheJudgerC-LL
CF28BA0A554F6878