33 384 667 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 =	951000
B2 =	1396505880

Status	Date	User	Residue	Shift	Software
Bad	2003-10-08	Stephan Grupp	013A19481DD29D8C	23786485	Windows,Prime95,v23,(aka WZ1)
Verified	2014-10-10	Architects Cubed	F5F309E70BDFFF69	32847552	Linux 64-bit,Prime95,v27.9,build 1
Verified	2014-10-20	Dubslow	F5F309E70BDFFF69	2361930	Linux 64-bit,Prime95,v28.5,build 2

History

Date	User	Type	Result
2025-11-13	Jason Lynch	NF-PM1	B1=951000, B2=1396505880
2021-10-04	TheJudger	NF	no factor TF: 74-75
2020-02-21	-anonymous-	NF	no factor TF: 73-74
2019-11-17	-anonymous-	NF	no factor TF: 72-73
2019-11-17	-anonymous-	NF	no factor TF: 71-72
2014-10-20	Dubslow	C-LL	F5F309E70BDFFF69
2014-10-10	Architects Cubed	C-LL	F5F309E70BDFFF69
2014-01-25	Chuck	NF	no factor TF: 70-71
2012-09-24	Patrik Johansson	NF	no factor TF: 68-70
2003-10-08	Stephan Grupp	C-LL	013A19481DD29D8C
2002-12-09	-anonymous-	NF-PM1	B1=495000, B2=495000
2002-11-16	-anonymous-	NF	no factor TF: 1-68
2001-04-15	Net_Force	NF	no factor TF: 1-60
2001-04-01	Net_Force	NF	no factor TF: 1-59
2001-01-14	Net_Force	NF	no factor TF: 1-58
2001-01-08	Net_Force	NF	no factor TF: 1-57