33 258 661 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 2⁷³

TF target 2⁷¹

P-1

B1 =	445000
B2 =	8900000

Status	Date	User	Residue	Shift	Software
Bad	2003-09-09	Ars Technica Team Prime Rib	A479C0464C75CC16	15538683	Windows,Prime95,v23,(aka WZ1)
Verified	2005-05-12	Kyle Schmidt	4EF32950F5CED9AB	31417535	Windows,Prime95,v23,(aka WZ1)
Verified	2012-05-28	Patrik Johansson	4EF32950F5CED9AB	27319030	Linux 32-bit,Prime95,v26.4,build 1

History

Date	User	Type	Result
2019-12-08	-anonymous-	NF	no factor TF: 72-73
2019-05-22	Architects Cubed	NF-PM1	B1=445000, B2=8900000, E=12
2019-05-18	Architects Cubed	NF	no factor TF: 71-72
2015-01-11	Nesowa	NF	no factor TF: 70-71
2012-05-28	Patrik Johansson	C-LL	4EF32950F5CED9AB
2012-01-26	David Campeau	NF	no factor TF: 69-70
2012-01-26	David Campeau	NF	no factor TF: 68-69
2005-05-12	Kyle Z Schmidt	C-LL	4EF32950F5CED9AB
2003-09-09	Team Prime Rib	C-LL	A479C0464C75CC16
2002-08-10	Team Prime Rib	NF-PM1	B1=495000, B2=495000
2002-08-10	Team Prime Rib	NF	no factor TF: 1-68
2001-08-26	Net_Force	NF	no factor TF: 1-60
2001-08-24	Net_Force	NF	no factor TF: 1-59
2001-08-24	Net_Force	NF	no factor TF: 1-57
2001-08-24	Net_Force	NF	no factor TF: 1-58
2000-12-07	Joss	NF	no factor TF: 1-56