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
49562081Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShift
Verified2010-11-28Freightyard686BD48BEA28E00A46917940
Verified2019-08-04Greg686BD48BEA28E00A39177718
History
DateUserTypeResult
2024-08-16tbusbyNF
no factor from 2^69 to 2^70
2019-08-04GregC-LL
686BD48BEA28E00A
2019-07-02-Anonymous-NF
no factor from 2^73 to 2^74
2019-05-09Sid & AndyNF-PM1
B1=1000000, B2=20000000, E=12
2017-12-20monstNF
no factor from 2^72 to 2^73
2015-11-22dragonbud20NF
no factor from 2^71 to 2^72
2015-10-03Sid & AndyNF
no factor from 2^70 to 2^71
2015-07-19Architects CubedNF
no factor from 2^69 to 2^70
2010-11-28FreightyardC-LL
686BD48BEA28E00A
2010-02-10tazNF-PM1
B1=785000