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
43115143Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 272
P-1
B1 = 520000
B2 = 13910000
LL
StatusDateUserResidueShift
Verified2009-08-27eipiD374EBAA28F47E6628070620
Verified2017-11-25Sergey NosovD374EBAA28F47E6637033234
History
DateUserTypeResult
2024-06-18James HeinrichNF
no factor from 2^69 to 2^70
2020-01-06-Anonymous-NF
no factor from 2^73 to 2^74
2019-07-15Random GPUsNF
no factor from 2^72 to 2^73
2017-11-25Sergey NosovC-LL
D374EBAA28F47E66
2015-09-30AirSquirrelsNF
no factor from 2^71 to 2^72
2015-08-10Mark RoseNF
no factor from 2^70 to 2^71
2015-07-01Carsten KossendeyNF
no factor from 2^69 to 2^70
2014-01-18LaurVNF
no factor from 2^68 to 2^69
2009-08-27eipiC-LL
D374EBAA28F47E66
2009-07-24eipiNF-PM1
B1=520000, B2=13910000