30 189 811 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 2⁷¹

P-1

B1 =	1283079
B2 =	38492370

Status	Date	User	Residue	Shift	Software
Bad	2007-05-12	Chris Good	795F6455C40EFBAE	5443696	Linux 32-bit,Prime95,v24 final,(aka Wc2)
Verified	2009-04-26	James Redmon	BBC2C7CE3814C99D	8958988	Windows,Prime95,v25.8,build 5
Verified	2013-08-24	Dubslow	BBC2C7CE3814C99D	4828530	Linux 64-bit,Prime95,v27.9,build 1

History

Date	User	Type	Result
2021-01-05	-anonymous-	NF	no factor TF: 74-75
2020-07-30	GdS	NF-PM1	B1=1283079, B2=38492370
2020-04-12	-anonymous-	NF	no factor TF: 73-74
2019-12-13	-anonymous-	NF	no factor TF: 71-72
2019-12-13	-anonymous-	NF	no factor TF: 72-73
2017-07-05	ramgeis	NF	no factor TF: 70-71
2013-08-24	Dubslow	C-LL	BBC2C7CE3814C99D
2013-02-26	tigreroars	NF	no factor TF: 69-70
2012-02-10	megavink	NF	no factor TF: 68-69
2009-04-26	James Redmon	C-LL	BBC2C7CE3814C99D
2007-05-12	-anonymous-	C-LL	795F6455C40EFBAE
2007-04-07	-anonymous-	NF-PM1	B1=435000
2005-07-17	-anonymous-	NF	no factor TF: 1-68
2005-01-10	1997rj7	NF	no factor TF: 1-62
2003-07-06	AxelFox	NF	no factor TF: 1-60
2001-09-16	Net_Force	NF	no factor TF: 1-56
2000-11-15	Joss	NF	no factor TF: 1-54