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
27505349Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 270
P-1
B1 = 305000
B2 = 4041250
LL
StatusDateUserResidueShift
Verified2005-04-02Uwe Steingens2B47E7901E4D1F9014304030
Verified2012-11-161997rj72B47E7901E4D1F9013865334
History
DateUserTypeResult
2021-10-11TheJudgerNF
no factor from 2^74 to 2^75
2021-09-12TheJudgerNF
no factor from 2^73 to 2^74
2021-08-25TheJudgerNF
no factor from 2^72 to 2^73
2021-08-22TheJudgerNF
no factor from 2^71 to 2^72
2021-03-15mikrNF
no factor from 2^70 to 2^71
2017-04-10ramgeisNF
no factor from 2^69 to 2^70
2012-11-161997rj7C-LL
2B47E7901E4D1F90
2011-11-27bcp19NF
no factor from 2^68 to 2^69
2011-11-24ChuckNF
no factor from 2^67 to 2^68