26 698 069 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 =	6640000

Status	Date	User	Residue	Shift	Software
Verified	2005-09-22	David J. Stucki	0441A5D0B5E5954F	318096	Windows,Prime95,v23,(aka WZ1)
Verified	2012-08-01	Dubslow	0441A5D0B5E5954F	21641026	Linux 64-bit,Prime95,v27.7,build 2

History

Date	User	Type	Result
2021-10-17	TheJudger	NF	no factor TF: 74-75
2021-09-19	TheJudger	NF	no factor TF: 73-74
2021-08-24	TheJudger	NF	no factor TF: 72-73
2021-08-24	TheJudger	NF	no factor TF: 71-72
2019-09-27	-anonymous-	NF	no factor TF: 70-71
2017-04-12	ramgeis	NF	no factor TF: 69-70
2012-08-01	Dubslow	C-LL	0441A5D0B5E5954F
2012-01-05	firejuggler	NF	no factor TF: 68-69
2011-10-28	Chuck	NF	no factor TF: 67-68
2005-09-22	David J. Stucki	C-LL	0441A5D0B5E5954F
2005-09-03	David J. Stucki	NF-PM1	B1=320000, B2=6640000
2004-09-02	-anonymous-	NF	no factor TF: 1-67
2004-07-02	-anonymous-	NF	no factor TF: 1-62
2004-06-21	-anonymous-	NF	no factor TF: 1-61