30 575 953 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 =	435000
B2 =	13050000

Status	Date	User	Residue	Shift	Software
Bad	2006-04-28	Rayhena Choudhury	CD4380EC6B24CA5A	20974650	Windows,Prime95,v23,(aka WZ1)
Verified	2013-10-28	BigBrother	DA3CF1DAF9E4FE52	9260041	Windows 64-bit,Prime95,v27.9,build 1
Verified	2013-11-06	Dubslow	DA3CF1DAF9E4FE52	16458507	Linux 64-bit,Prime95,v27.9,build 1

History

Date	User	Type	Result
2021-09-13	Yves de Wandelaar	NF	no factor TF: 74-75
2020-11-06	firejuggler	NF-PM1	B1=435000, B2=13050000
2020-04-14	-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
2018-04-11	ramgeis	NF	no factor TF: 70-71
2013-11-06	Dubslow	C-LL	DA3CF1DAF9E4FE52
2013-10-28	BigBrother	C-LL	DA3CF1DAF9E4FE52
2013-03-05	tigreroars	NF	no factor TF: 69-70
2012-04-10	bcp19	NF	no factor TF: 68-69
2006-04-28	-anonymous-	C-LL	CD4380EC6B24CA5A
2006-02-15	-anonymous-	NF-PM1	B1=435000
2005-09-03	cmarble	NF	no factor TF: 1-68
2005-04-11	1997rj7	NF	no factor TF: 1-62
2003-07-30	AxelFox	NF	no factor TF: 1-60
2002-03-16	Joss	NF	no factor TF: 1-57