26 391 347 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 2⁷⁴

TF target 2⁷⁰

P-1

B1 =	285000
B2 =	3633750

Status	Date	User	Residue	Shift	Software
Verified	2004-12-13	Derek Bergin	45D3C69E75E01256	4417396	Windows,Prime95,v23,(aka WZ1)
Verified	2012-06-13	Dubslow	45D3C69E75E01256	22844427	Linux 64-bit,Prime95,v27.7,build 2

History

Date	User	Type	Result
2021-09-13	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
2021-04-24	mikr	NF	no factor TF: 70-71
2017-04-11	ramgeis	NF	no factor TF: 69-70
2012-06-13	Dubslow	C-LL	45D3C69E75E01256
2011-11-28	bcp19	NF	no factor TF: 68-69
2011-11-25	Carsten Kossendey	NF	no factor TF: 67-68
2004-12-13	-anonymous-	C-LL	45D3C69E75E01256
2004-11-30	-anonymous-	NF-PM1	B1=285000, B2=3633750
2004-11-22	-anonymous-	NF-PM1	B1=285000, B2=3633750
2004-10-18	Team Prime Rib	NF	no factor TF: 1-67
2004-08-06	Team Prime Rib	NF	no factor TF: 1-67
2004-06-12	1997rj7	NF	no factor TF: 1-62