26 539 651 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 =	280000
B2 =	3080000

Status	Date	User	Residue	Shift	Software
Verified	2004-12-13	Aaron Zod	142864640F023D03	18964644	Windows,Prime95,v23,NT service,(aka WZ5)
Verified	2011-02-24	Reed_Young	142864640F023D03	3770125	Linux 64-bit,Prime95,v25.9,build 4

History

Date	User	Type	Result
2021-10-17	TheJudger	NF	no factor TF: 74-75
2021-09-26	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
2021-05-03	mikr	NF	no factor TF: 70-71
2018-05-25	VictordeHollander	NF	no factor TF: 69-70
2018-03-20	VictordeHollander	NF	no factor TF: 68-69
2016-12-08	NR	NF	no factor TF: 67-68
2011-02-24	Reed_Young	C-LL	142864640F023D03
2004-12-13	-anonymous-	C-LL	142864640F023D03
2004-11-22	-anonymous-	NF-PM1	B1=280000, B2=3080000
2004-11-22	tsc	NF	no factor TF: 1-67