30 621 473 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 2⁷⁴

TF target 2⁷¹

P-1

B1 =	595000
B2 =	13238750

Status	Date	User	Residue	Shift	Software
Bad	2007-02-05	Ian Bucklar	E4B5B2F220BFE26E	6968556	Windows,Prime95,v23,(aka WZ1)
Verified	2013-09-26	Kligman	659E67106E9731BC	29759286	Linux 32-bit,Prime95,v27.7,build 2
Verified	2013-10-17	Dubslow	659E67106E9731BC	12212807	Linux 64-bit,Prime95,v27.9,build 1

History

Date	User	Type	Result
2020-05-26	Architects Cubed	NF-PM1	B1=595000, B2=13238750, E=12
2020-04-17	-anonymous-	NF	no factor TF: 73-74
2019-12-20	-anonymous-	NF	no factor TF: 71-72
2019-12-20	-anonymous-	NF	no factor TF: 72-73
2018-04-11	ramgeis	NF	no factor TF: 70-71
2013-10-17	Dubslow	C-LL	659E67106E9731BC
2013-09-26	Kligman	C-LL	659E67106E9731BC
2013-02-22	bcp19	NF	no factor TF: 69-70
2012-02-17	megavink	NF	no factor TF: 68-69
2007-02-05	-anonymous-	C-LL	E4B5B2F220BFE26E
2006-01-15	-anonymous-	NF-PM1	B1=290000, B2=1377500
2005-12-19	-anonymous-	NF	no factor TF: 1-68
2005-08-01	-anonymous-	NF	no factor TF: 1-67
2005-04-11	1997rj7	NF	no factor TF: 1-62
2003-08-08	AxelFox	NF	no factor TF: 1-60
2000-07-03	Alex Kruppa	NF	no factor TF: 1-52