26 141 851 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 2⁷³

TF target 2⁷⁰

P-1

B1 =	1000000
B2 =	10000000

Status	Date	User	Residue	Shift	Software
Bad	2005-07-17	Ryouchi Hashimoto	766D3CB41016DC79	24828705	Windows,Prime95,v23,(aka WZ1)
Bad	2011-10-28	NathanFaber	6B71CC06A070ABF1	12573139	Windows,Prime95,v26.5,build 5
Verified	2012-01-30	monst	4CFBD63B44087D43	11933369	Windows 64-bit,Prime95,v26.6,build 3
Verified	2012-07-02	Dubslow	4CFBD63B44087D43	0	CUDALucas v2.04 Beta

History

Date	User	Type	Result
2021-01-09	-anonymous-	NF	no factor TF: 72-73
2021-01-09	-anonymous-	NF	no factor TF: 70-71
2021-01-09	-anonymous-	NF	no factor TF: 71-72
2012-07-16	BloodIce	NF-PM1	B1=1000000, B2=10000000, E=12
2012-07-02	Dubslow	C-LL	4CFBD63B44087D43
2012-02-02	hustensaft	NF	no factor TF: 69-70
2012-01-30	monst	C-LL	4CFBD63B44087D43
2012-01-02	Luigi Morelli	NF	no factor TF: 68-69
2011-11-01	David Campeau	NF	no factor TF: 67-68
2011-10-28	NathanFaber	C-LL	6B71CC06A070ABF1
2005-07-17	-anonymous-	C-LL	766D3CB41016DC79
2005-07-01	-anonymous-	NF-PM1	B1=385000
2004-10-03	Marzbug	NF	no factor TF: 1-67