47 811 013 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 =	1000000
B2 =	20000000

Status	Date	User	Residue	Shift	Software
Bad	2010-12-19	ez	D3C3B37DA76148AB	23522239	Linux 32-bit,Prime95,v25.11,build 2
Verified	2015-11-24	ATH	E2F00DF962E28301	23831512	Windows 64-bit,Prime95,v28.7,build 1
Verified	2016-05-31	MadPoo 🙂	E2F00DF962E28301	19567978	Windows 64-bit,Prime95,v26,(aka We4)

History

Date	User	Type	Result
2020-11-19	-anonymous-	NF	no factor TF: 74-75
2020-09-19	Sid & Andy	NF-PM1	B1=1000000, B2=20000000
2019-07-19	Sid & Andy	NF	no factor TF: 73-74
2018-02-05	ktony	NF	no factor TF: 72-73
2016-05-31	MadPoo 🙂	C-LL	E2F00DF962E28301
2015-11-24	ATH	C-LL	E2F00DF962E28301
2015-10-28	1997rj7	NF	no factor TF: 71-72
2015-09-07	Sid & Andy	NF	no factor TF: 70-71
2015-07-21	Sid & Andy	NF	no factor TF: 69-70
2010-12-19	ez	C-LL	D3C3B37DA76148AB
2010-09-03	-anonymous-	NF-PM1	B1=745000
2008-05-10	-anonymous-	NF	no factor TF: 1-69
2008-04-07	-anonymous-	NF	no factor TF: 1-69