30 877 051 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 =	1500000
B2 =	45000000

Status	Date	User	Residue	Shift	Software
Bad	2007-01-16	Richard Smith	4984828B0C843072	19011209	Windows,Prime95,v24 final,(aka Wc1)
Verified	2008-11-26	-anonymous-	FC6FE594B35E3DE1	23786799	Windows,Prime95,v24 final,(aka Wc1)
Verified	2013-12-10	Dubslow	FC6FE594B35E3DE1	16760487	Linux 64-bit,Prime95,v27.9,build 1

History

Date	User	Type	Result
2021-10-04	TheJudger	NF	no factor TF: 74-75
2021-09-17	megavink	NF-PM1	B1=1500000, B2=45000000
2020-04-09	-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
2013-12-10	Dubslow	C-LL	FC6FE594B35E3DE1
2013-03-12	kdgehman	NF	no factor TF: 69-70
2012-04-28	bcp19	NF	no factor TF: 68-69
2011-05-24	Ungelovende	NF	no factor TF: 67-68
2008-11-26	-anonymous-	C-LL	FC6FE594B35E3DE1
2007-01-16	Malloe	C-LL	4984828B0C843072
2006-03-28	-anonymous-	NF-PM1	B1=310000, B2=1550000
2005-09-03	sannerud.com	NF	no factor TF: 1-67
2003-08-25	AxelFox	NF	no factor TF: 1-60
2002-03-24	Joss	NF	no factor TF: 1-57
2000-11-15	Joss	NF	no factor TF: 1-54