26 238 757 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁵

TF target 2⁷⁰

P-1

B1 =	933000
B2 =	48798000

Status	Date	User	Residue	Shift	Software
Verified	2006-10-01	Stefan	162AF34883E637EA	21713105	Windows,Prime95,v24 final,(aka Wc1)
Verified	2012-04-09	Dubslow	162AF34883E637EA	0	CUDALucas v2.00

History

Date	User	Type	Result
2021-12-17	Francesco Urbano	NF-PM1	B1=933000, B2=48798000
2021-10-17	TheJudger	NF	no factor TF: 74-75
2021-09-30	TheJudger	NF	no factor TF: 73-74
2021-08-26	TheJudger	NF	no factor TF: 72-73
2021-08-26	TheJudger	NF	no factor TF: 71-72
2021-04-16	mikr	NF	no factor TF: 70-71
2017-04-05	ramgeis	NF	no factor TF: 69-70
2012-04-09	Dubslow	C-LL	162AF34883E637EA
2011-11-26	bcp19	NF	no factor TF: 68-69
2011-11-25	Carsten Kossendey	NF	no factor TF: 67-68
2006-10-01	-anonymous-	C-LL	162AF34883E637EA
2005-07-17	-anonymous-	NF-PM1	B1=405000
2004-09-16	-anonymous-	NF	no factor TF: 1-67