26 869 889 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 =	320000
B2 =	7600000

Status	Date	User	Residue	Shift	Software
Bad	2005-10-18	Gecko	D6F8106438A8D715	20667368	Windows,Prime95,v23,(aka WZ1)
Verified	2006-09-04	EDNY	BB4E2539F72D055E	13999949	Windows,Prime95,v22,NT service,(aka WY5)
Verified	2012-08-03	Dubslow	BB4E2539F72D055E	0	CUDALucas v2.04 Beta

History

Date	User	Type	Result
2021-10-11	TheJudger	NF	no factor TF: 74-75
2021-09-19	TheJudger	NF	no factor TF: 73-74
2021-08-25	TheJudger	NF	no factor TF: 72-73
2021-08-25	TheJudger	NF	no factor TF: 71-72
2021-05-23	mikr	NF	no factor TF: 70-71
2017-04-08	ramgeis	NF	no factor TF: 69-70
2012-08-03	Dubslow	C-LL	BB4E2539F72D055E
2012-03-26	garo	NF	no factor TF: 68-69
2012-03-26	garo	NF	no factor TF: 67-68
2006-09-04	-anonymous-	C-LL	BB4E2539F72D055E
2005-10-18	-anonymous-	C-LL	D6F8106438A8D715
2005-04-02	Darek Mihocka	NF-PM1	B1=320000, B2=7600000
2004-10-18	bald2718281828	NF	no factor TF: 1-67
2002-06-02	Joss	NF	no factor TF: 1-57