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
27893119Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 270
P-1
B1 = 330000
B2 = 7012500
LL
StatusDateUserResidueShift
Verified2005-11-01David A. EvansB27DA322BE8BF35F661281
Verified2012-06-04tintin42B27DA322BE8BF35F24080656
History
DateUserTypeResult
2021-10-07TheJudgerNF
no factor from 2^74 to 2^75
2021-09-12TheJudgerNF
no factor from 2^73 to 2^74
2021-08-23TheJudgerNF
no factor from 2^72 to 2^73
2021-04-28Sid & AndyNF
no factor from 2^71 to 2^72
2021-04-01mikrNF
no factor from 2^70 to 2^71
2017-04-02ramgeisNF
no factor from 2^69 to 2^70
2012-06-04tintin42C-LL
B27DA322BE8BF35F
2011-11-29bcp19NF
no factor from 2^68 to 2^69
2011-08-17Carsten KossendeyNF
no factor from 2^67 to 2^68