81 110 797 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

TF

No factors below 2⁷⁵

TF target 2⁷⁵

P-1

B1 =	690000
B2 =	13972500

Status	Date	User	Residue	Shift
Verified	2018-09-26	Ryan Propper	E51EEA04B1647DD1	1602719
Verified	2024-11-28	Jeff_Gilchrist	E51EEA04B1647DD1	66304570

History

Date	User	Type	Result
2024-11-28	Jeff_Gilchrist	C-LL	E51EEA04B1647DD1
2018-09-26	Ryan Propper	C-LL	E51EEA04B1647DD1
2017-04-19	Filen	NF-PM1	B1=690000, B2=13972500, E=12
2016-09-05	AirSquirrels	NF	no factor from 2^74 to 2^75
2016-09-05	AirSquirrels	NF	no factor from 2^73 to 2^74
2012-03-24	Piepen	NF	no factor from 2^72 to 2^73
2012-03-24	Piepen	NF	no factor from 2^71 to 2^72
2012-03-24	Piepen	NF	no factor from 2^70 to 2^71
2012-03-24	Piepen	NF	no factor from 2^69 to 2^70
2012-03-24	Piepen	NF	no factor from 2^68 to 2^69
2012-03-24	Piepen	NF	no factor from 2^67 to 2^68
2012-03-24	Piepen	NF	no factor from 2^66 to 2^67
2012-03-24	Piepen	NF	no factor from 2^65 to 2^66
2012-03-24	Piepen	NF	no factor from 2^66 to 2^73
2010-12-12	Architects Cubed	NF	no factor from 2^64 to 2^65