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
42943969Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 272
P-1
B1 = 495000
B2 = 13860000
LL
StatusDateUserResidueShift
Verified2009-05-10ANONYMOUS134983DEC0B396F522787568
Verified2016-12-19Sergey Nosov134983DEC0B396F530068499
History
DateUserTypeResult
2024-06-18James HeinrichNF
no factor from 2^69 to 2^70
2019-10-27Sid & AndyNF
no factor from 2^73 to 2^74
2018-12-24-Anonymous-NF
no factor from 2^72 to 2^73
2016-12-19Sergey NosovC-LL
134983DEC0B396F5
2015-09-11-Anonymous-NF
no factor from 2^71 to 2^72
2015-04-23Mark RoseNF
no factor from 2^70 to 2^71
2015-04-10Carsten KossendeyNF
no factor from 2^69 to 2^70
2009-05-10ANONYMOUSC-LL
134983DEC0B396F5
2009-04-11ANONYMOUSNF-PM1
B1=495000, B2=13860000, E=6