40 010 623 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 2⁷²

P-1

B1 =	455000
B2 =	7735000

Status	Date	User	Residue	Shift	Software
Verified	2008-05-11	Elias Daher	15AC6411B7437F01	2113877	Windows,Prime95,v24 final,(aka Wc1)
Verified	2017-05-14	Dubslow	15AC6411B7437F01	30657528	Linux 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2020-02-14	-anonymous-	NF	no factor TF: 73-74
2019-10-04	-anonymous-	NF	no factor TF: 72-73
2017-05-14	Dubslow	C-LL	15AC6411B7437F01
2014-12-30	ktony	NF	no factor TF: 71-72
2014-11-25	srow7	NF	no factor TF: 70-71
2014-11-23	Architects Cubed	NF	no factor TF: 69-70
2013-10-27	VictordeHollander	NF	no factor TF: 68-69
2008-05-10	-anonymous-	C-LL	15AC6411B7437F01
2008-03-11	-anonymous-	NF-PM1	B1=455000, B2=7735000
2007-02-05	JC_Herles	NF	no factor TF: 1-68
2003-11-16	-anonymous-	NF	no factor TF: 1-61
2000-12-31	Joss	NF	no factor TF: 1-60