26 874 889 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 =	315000
B2 =	7245000

Status	Date	User	Residue	Shift	Software
Verified	2005-01-10	Shattering Technologies	53B4A8B1C1742B60	19865356	Windows,Prime95,v23,(aka WZ1)
Verified	2012-08-07	Dubslow	53B4A8B1C1742B60	8707252	Linux 64-bit,Prime95,v27.7,build 2

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
2017-04-09	ramgeis	NF	no factor TF: 69-70
2012-08-07	Dubslow	C-LL	53B4A8B1C1742B60
2012-01-15	bcp19	NF	no factor TF: 68-69
2011-12-31	David Campeau	NF	no factor TF: 67-68
2005-01-10	-anonymous-	C-LL	53B4A8B1C1742B60
2004-12-13	-anonymous-	NF-PM1	B1=315000, B2=7245000
2004-10-03	-anonymous-	NF	no factor TF: 1-67
2002-06-02	Joss	NF	no factor TF: 1-57