33 601 153 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 2⁷⁴

TF target 2⁷¹

P-1

B1 =	200000
B2 =	4250000

Status	Date	User	Residue	Shift	Software
Verified	2003-11-17	Anatole Kaushanski	9C3EFD1D972F9DAD	23872833	Windows,Prime95,v23,(aka WZ1)
Verified	2009-03-04	curtisc	9C3EFD1D972F9DAD	17151007	Windows Service,Prime95,v25.8,build 1

History

Date	User	Type	Result
2024-05-28	Naegi Makoto	NF	no factor TF: 68-69
2020-04-18	-anonymous-	NF	no factor TF: 73-74
2019-12-26	-anonymous-	NF	no factor TF: 71-72
2019-12-26	-anonymous-	NF	no factor TF: 72-73
2015-01-27	Nesowa	NF	no factor TF: 70-71
2012-12-14	Architects Cubed	NF	no factor TF: 69-70
2012-11-05	Architects Cubed	NF	no factor TF: 68-69
2012-09-22	Architects Cubed	NF	no factor TF: 67-68
2009-10-30	Carsten Kossendey	NF-PM1	B1=200000, B2=4250000, E=6
2009-03-04	curtisc	C-LL	9C3EFD1D972F9DAD
2008-11-25	Carsten Kossendey	NF	no factor TF: 66-67
2008-11-25	Carsten Kossendey	NF	no factor TF: 65-66
2008-11-25	Carsten Kossendey	NF	no factor TF: 64-65
2003-11-17	-anonymous-	C-LL	9C3EFD1D972F9DAD
2003-06-06	markr	NF	no factor TF: 1-64