30 257 243 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 =	340000
B2 =	6375000

Status	Date	User	Residue	Shift	Software
Verified	2005-11-13	Michael J Gruber	BEB9B333D65EE232	19141845	Linux 32-bit,Prime95,v24 final,(aka Wc2)
Verified	2013-09-16	Dubslow	BEB9B333D65EE232	24953375	Linux 64-bit,Prime95,v27.9,build 1

History

Date	User	Type	Result
2020-11-13	-anonymous-	NF	no factor TF: 74-75
2020-04-15	-anonymous-	NF	no factor TF: 73-74
2019-12-06	-anonymous-	NF	no factor TF: 72-73
2019-12-06	-anonymous-	NF	no factor TF: 71-72
2017-08-08	ramgeis	NF	no factor TF: 70-71
2013-09-16	Dubslow	C-LL	BEB9B333D65EE232
2012-02-10	Craig Meyers	NF	no factor TF: 68-70
2005-11-13	-anonymous-	C-LL	BEB9B333D65EE232
2005-10-18	-anonymous-	NF-PM1	B1=340000, B2=6375000
2005-08-01	Per Jessen	NF	no factor TF: 1-68
2005-02-02	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
2000-11-05	Joss	NF	no factor TF: 1-54