71 318 347 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 2⁷⁴

P-1

B1 =	1065000
B2 =	30618750

Status	Date	User	Residue	Shift
Verified	2017-03-09	Bob Schulien	7D1EF5B793C3CB3B	25686970
Verified	2024-10-04	Vince	7D1EF5B793C3CB3B	28164156

History

Date	User	Type	Result
2024-10-04	Vince	C-LL	7D1EF5B793C3CB3B
2017-03-09	Bob Schulien	C-LL	7D1EF5B793C3CB3B
2016-07-29	-Anonymous-	NF	no factor from 2^74 to 2^75
2015-01-26	owftheevil	NF-PM1	B1=1065000, B2=30618750, e=6
2014-11-30	megavink	NF	no factor from 2^73 to 2^74
2014-11-30	megavink	NF	no factor from 2^72 to 2^73
2014-11-30	megavink	NF	no factor from 2^71 to 2^72
2012-12-07	Clown_Royal	NF	no factor from 2^70 to 2^71
2012-05-03	-Anonymous-	NF	no factor from 2^69 to 2^70
2010-04-29	Steve_Richter	NF	no factor from 2^68 to 2^69
2010-04-25	Steve_Richter	NF	no factor from 2^67 to 2^68
2010-04-21	Steve_Richter	NF	no factor from 2^66 to 2^67
2010-03-18	Hassaan	NF	no factor from 2^65 to 2^66
2010-03-16	Sturle Sunde	NF	no factor from 2^64 to 2^65
2008-10-07	Wojciech Florek	NF	no factor to 2^64