39 392 593 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 2⁷²

P-1

B1 =	435000
B2 =	8265000

Status	Date	User	Residue	Shift	Software
Verified	2008-06-14	Luo Yang	68F20A44923739D9	25713258	Windows,Prime95,v24 final,(aka Wc1)
Verified	2017-02-18	Dubslow	68F20A44923739D9	5123407	Linux 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2020-12-15	-anonymous-	NF	no factor TF: 74-75
2020-02-22	-anonymous-	NF	no factor TF: 73-74
2019-10-11	-anonymous-	NF	no factor TF: 72-73
2019-06-21	monst	NF	no factor TF: 71-72
2017-02-18	Dubslow	C-LL	68F20A44923739D9
2014-12-13	Jerry Hallett	NF	no factor TF: 70-71
2014-12-08	VictordeHollander	NF	no factor TF: 69-70
2008-06-13	-anonymous-	C-LL	68F20A44923739D9
2007-09-28	-anonymous-	NF-PM1	B1=435000, B2=8265000
2006-11-09	raymondf	NF	no factor TF: 1-69
2003-09-29	-anonymous-	NF	no factor TF: 1-60
2003-09-14	-anonymous-	NF	no factor TF: 1-59