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
47393623Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 555000
B2 = 10822500
LL
StatusDateUserResidueShift
Verified2009-01-18helicom9C89D3246D57F62B22354315
Verified2019-01-13Strolling Jellyfish9C89D3246D57F62B9681953
History
DateUserTypeResult
2019-01-13Strolling JellyfishC-LL
9C89D3246D57F62B
2017-12-13HardyP GermanyNF
no factor from 2^72 to 2^73
2015-11-20-Anonymous-NF
no factor from 2^71 to 2^72
2015-06-15LaurVNF
no factor from 2^70 to 2^71
2015-05-27LaurVNF
no factor from 2^69 to 2^70
2013-10-17VictordeHollanderNF
no factor from 2^68 to 2^69
2009-01-18helicomC-LL
9C89D3246D57F62B
2008-12-08helicomNF-PM1
B1=555000, B2=10822500