26 609 119 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 =	1923076
B2 =	1880825310

Status	Date	User	Residue	Shift	Software
Verified	2004-12-23	C. Cooper / S. Boone	C506DA46B30BBBD5	21156181	Windows,Prime95,v23,NT service,(aka WZ5)
Verified	2011-11-06	Dubslow	C506DA46B30BBBD5	19612621	Windows 64-bit,Prime95,v26.6,build 3

History

Date	User	Type	Result
2025-01-04	timc995	NF-PM1	B1=1923076, B2=1880825310
2021-09-25	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
2021-05-08	mikr	NF	no factor TF: 70-71
2018-05-29	VictordeHollander	NF	no factor TF: 69-70
2018-03-26	VictordeHollander	NF	no factor TF: 68-69
2011-11-06	Dubslow	C-LL	C506DA46B30BBBD5
2011-10-12	David Campeau	NF	no factor TF: 67-68
2004-12-23	curtisc	C-LL	C506DA46B30BBBD5
2004-11-30	curtisc	NF-PM1	B1=405000
2004-08-20	Marzbug	NF	no factor TF: 1-67
2004-05-25	-anonymous-	NF	no factor TF: 1-62