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
41391943Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 272
P-1
B1 = 465000
B2 = 10462500
LL
StatusDateUserResidueShift
Verified2008-07-25Michael BushnellA3918E4915A2FDCF14937648
Verified2017-07-11Sergey NosovA3918E4915A2FDCF35542453
History
DateUserTypeResult
2020-01-03-Anonymous-NF
no factor from 2^73 to 2^74
2019-06-14LaurVNF
no factor from 2^72 to 2^73
2017-07-11Sergey NosovC-LL
A3918E4915A2FDCF
2015-08-30AirSquirrelsNF
no factor from 2^71 to 2^72
2015-01-17krackerNF
no factor from 2^70 to 2^71
2015-01-15Mark RoseNF
no factor from 2^69 to 2^70