68 245 403 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 2⁷⁴

P-1

B1 =	625000
B2 =	12812500

Status	Date	User	Residue	Shift	Software
Verified	2016-01-16	Kyle Z Schmidt	9D8D9404A7E9247D	30638106	Windows 64-bit,Prime95,v28.5,build 2
Verified	2024-03-30	P_B_MCL	9D8D9404A7E9247D	23529929	Linux 64-bit,Prime95,v30.19,build 13

History

Date	User	Type	Result
2024-03-30	P_B_MCL	C-LL	9D8D9404A7E9247D
2016-01-16	Kyle Z Schmidt	C-LL	9D8D9404A7E9247D
2015-12-22	gcardona	NF	no factor TF: 74-75
2014-08-03	TheJudger	NF-PM1	B1=625000, B2=12812500, E=12
2014-07-31	Kevin Jaget	NF	no factor TF: 73-74
2014-07-31	Kevin Jaget	NF	no factor TF: 72-73
2014-07-09	RichD0	NF	no factor TF: 71-72
2012-10-12	Clown_Royal	NF	no factor TF: 70-71
2012-03-05	dsl	NF	no factor TF: 69-70
2010-01-28	Per Jessen	NF	no factor TF: 68-69
2010-01-24	jasta	NF	no factor TF: 67-68
2010-01-18	Dr. Nowak	NF	no factor TF: 66-67
2010-01-11	Sturle Sunde	NF	no factor TF: 65-66
2009-04-16	abc	NF	no factor TF: 64-65
2008-10-21	-anonymous-	NF	no factor TF: 1-64