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
28661683Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 270
P-1
B1 = 325000
B2 = 7881250
LL
StatusDateUserResidueShift
Verified2007-05-28EDNY331C6A997E2BDF4C23872552
Verified2011-11-16-Anonymous-331C6A997E2BDF4C1917285
History
DateUserTypeResult
2021-06-29Sid & AndyNF
no factor from 2^72 to 2^73
2021-06-29Sid & AndyNF
no factor from 2^71 to 2^72
2021-01-23mikrNF
no factor from 2^70 to 2^71
2017-04-09ramgeisNF
no factor from 2^69 to 2^70
2014-01-06NesowaNF
no factor from 2^68 to 2^69
2011-11-16Admiral777C-LL
331C6A997E2BDF4C