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
39215717Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 465000
B2 = 11625000
LL
StatusDateUserResidueShift
Verified2008-01-15Karel F S Beun66C9F99DB95E85FC14598324
Verified2016-11-16Sergey Nosov66C9F99DB95E85FC20520435
History
DateUserTypeResult
2022-05-27RichD0NF
no factor from 2^72 to 2^73
2019-07-14monstNF
no factor from 2^71 to 2^72
2016-11-16Sergey NosovC-LL
66C9F99DB95E85FC
2014-12-14megavinkNF
no factor from 2^70 to 2^71
2014-12-14megavinkNF
no factor from 2^69 to 2^70
2013-09-22Le ComteNF
no factor from 2^68 to 2^69