39 658 007 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 =	450000
B2 =	10575000

Status	Date	User	Residue	Shift	Software
Verified	2010-09-11	Håkan Svensson	FED4EBFB9D0D517C	38654858	Linux 64-bit,Prime95,v25.11,build 2
Verified	2017-03-29	Dubslow	FED4EBFB9D0D517C	8969099	Linux 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2021-05-14	-anonymous-	NF	no factor TF: 74-75
2020-02-28	-anonymous-	NF	no factor TF: 73-74
2019-10-11	-anonymous-	NF	no factor TF: 72-73
2019-07-09	monst	NF	no factor TF: 71-72
2017-03-29	Dubslow	C-LL	FED4EBFB9D0D517C
2014-12-14	megavink	NF	no factor TF: 70-71
2014-12-14	megavink	NF	no factor TF: 69-70
2010-09-11	Håkan Svensson	C-LL	FED4EBFB9D0D517C
2010-02-10	Mr P-1	NF-PM1	B1=450000, B2=10575000
2007-01-01	trif	NF	no factor TF: 1-69
2001-01-28	Joss	NF	no factor TF: 1-56