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
49788377Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 273
P-1
B1 = 550000
B2 = 13181250
LL
StatusDateUserResidueShift
Verified2010-03-20Bud3A8F4529519D49AC10745522
Verified2019-10-24frolyar3A8F4529519D49AC25749394
History
DateUserTypeResult
2019-10-24frolyarC-LL
3A8F4529519D49AC
2018-01-25monstNF
no factor from 2^72 to 2^73
2015-12-04-Anonymous-NF
no factor from 2^71 to 2^72
2015-05-15Mark RoseNF
no factor from 2^70 to 2^71
2010-03-20BudC-LL
3A8F4529519D49AC
2010-02-06BudNF-PM1
B1=550000, B2=13181250