39 232 673 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 2⁷³

TF target 2⁷²

P-1

B1 =	445000
B2 =	10346250

Status	Date	User	Residue	Shift	Software
Bad	2008-03-06	Kyle Schmidt	ECB18E78C03A2CF4	25007164	Windows,Prime95,v24 final,(aka Wc1)
Verified	2015-07-31	Klaus Nordmann	A241CEC934D7DEA0	31084880	Windows 64-bit,Prime95,v28.5,build 2
Verified	2016-04-27	AirSquirrels	A241CEC934D7DEA0	0	clLucas v1.04

History

Date	User	Type	Result
2022-05-25	Sid & Andy	NF	no factor TF: 72-73
2019-07-21	monst	NF	no factor TF: 71-72
2016-04-27	AirSquirrels	C-LL	A241CEC934D7DEA0
2015-07-31	Klaus Nordmann	C-LL	A241CEC934D7DEA0
2014-12-07	megavink	NF	no factor TF: 70-71
2014-12-07	megavink	NF	no factor TF: 69-70
2008-03-05	Kyle Z Schmidt	C-LL	ECB18E78C03A2CF4
2007-07-24	-anonymous-	NF-PM1	B1=445000, B2=10346250
2007-07-24	-anonymous-	NF	no factor TF: 1-69
2006-10-01	-anonymous-	NF	no factor TF: 1-68
2003-10-14	-anonymous-	NF	no factor TF: 1-60
2003-10-08	-anonymous-	NF	no factor TF: 1-60
2003-09-14	-anonymous-	NF	no factor TF: 1-59
2001-02-18	Joss	NF	no factor TF: 1-56