30 216 281 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 =	330000
B2 =	5527500

Status	Date	User	Residue	Shift	Software
Verified	2007-03-20	Ed Fox	490620548A88F019	13866650	Windows,Prime95,v23,(aka WZ1)
Verified	2013-08-31	Dubslow	490620548A88F019	11443280	Linux 64-bit,Prime95,v27.9,build 1

History

Date	User	Type	Result
2020-11-13	-anonymous-	NF	no factor TF: 74-75
2020-04-12	-anonymous-	NF	no factor TF: 73-74
2019-12-14	-anonymous-	NF	no factor TF: 71-72
2019-12-14	-anonymous-	NF	no factor TF: 72-73
2017-08-04	ramgeis	NF	no factor TF: 70-71
2013-08-31	Dubslow	C-LL	490620548A88F019
2012-02-12	Craig Meyers	NF	no factor TF: 69-70
2012-02-08	Serge Batalov	NF	no factor TF: 68-69
2007-03-20	AVOCA ED	NF-PM1	B1=330000, B2=5527500
2007-03-20	AVOCA ED	C-LL	490620548A88F019
2007-03-20	AVOCA ED	NF	no factor TF: 1-68
2005-11-13	AVOCA ED	C-LL	490620548A88F019
2005-10-18	AVOCA ED	NF	no factor TF: 1-68
2005-10-18	AVOCA ED	NF-PM1	B1=330000, B2=5527500
2005-09-22	stack2stack	NF	no factor TF: 1-67
2005-01-20	1997rj7	NF	no factor TF: 1-62
2003-06-17	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