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
44394173Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 272
P-1
B1 = 535000
B2 = 15381250
LL
StatusDateUserResidueShift
Bad2009-05-08eskifullofbeer98463F28B48A08C010370799
Verified2015-08-31MadPooFDBFED9B23F2F50D1928173
Verified2016-09-01ATHFDBFED9B23F2F50D22212024
History
DateUserTypeResult
2024-05-25ChuckNF
no factor from 2^68 to 2^69
2022-04-10TheJudgerNF
no factor from 2^73 to 2^74
2022-04-10TheJudgerNF
no factor from 2^72 to 2^73
2016-09-01ATHC-LL
FDBFED9B23F2F50D
2015-08-31MadPooC-LL
FDBFED9B23F2F50D
2015-08-18Sid & AndyNF
no factor from 2^71 to 2^72
2015-08-18Sid & AndyNF
no factor from 2^70 to 2^71
2015-07-03el groccoNF
no factor from 2^69 to 2^70
2013-01-29Carsten KossendeyNF
no factor from 2^68 to 2^69
2009-05-08eskifullofbeerC-LL
98463F28B48A08C0
2009-04-08eskifullofbeerNF-PM1
B1=535000, B2=15381250