Prime or Not Prime - Page 3

qtwerp · 06-08-2007

1337 is not prime. Divisible by 7.

...Actually -5 is NOT prime.

623

DChristopher · 06-09-2007

623 is divisible by 7.

719.

bns · 06-09-2007

719 is prime.

815?

DChristopher · 06-09-2007

815 is divisible by 163.

Also by the more obvious 5

817?

bns · 06-09-2007

817 is divisible by 43.

1021?

metaphor- · 06-09-2007

im going to say prime, at least i have not come up with anything yet.

9531

bns · 06-09-2007

1021 is prime.

9531 is divisible by 3177.

1001?

metaphor- · 06-14-2007

not prime... 1001/7

6017

Extreme Coder · 06-14-2007

not prime(my guess)

135247

DChristopher · 06-15-2007

6017 is divisible by 547.

135247? I have no idea. Too big to do by hand.

731

masoris · 06-15-2007

731 not prime, it divisible by 17

123456789

qtwerp · 06-15-2007

123456789... not prime. Divisible by 3 (1+2+3+4+5+6+7+8+9 = 45... 4+5 = 9... 9%3 = 0)

1234321

06-08-2007	#41 (permalink)
qtwerp Retired User Join Date: May 2007 Posts: 372	Re: Prime or Not Prime 1337 is not prime. Divisible by 7. ...Actually -5 is NOT prime. 623
qtwerp Retired User Join Date: May 2007 Posts: 372

06-09-2007	#42 (permalink)
DChristopher pragmatic idealist Join Date: May 2007 Posts: 190	Re: Prime or Not Prime 623 is divisible by 7. 719.

06-09-2007	#43 (permalink)
bns Moderator Join Date: May 2007 Location: Indiana, USA Posts: 1,648	Re: Prime or Not Prime 719 is prime. 815?

06-09-2007	#44 (permalink)
DChristopher pragmatic idealist Join Date: May 2007 Posts: 190	Re: Prime or Not Prime 815 is divisible by 163. Also by the more obvious 5 817?

06-09-2007	#45 (permalink)
bns Moderator Join Date: May 2007 Location: Indiana, USA Posts: 1,648	Re: Prime or Not Prime 817 is divisible by 43. 1021?

06-09-2007	#46 (permalink)
metaphor- Sith Lord on Steroids. Join Date: May 2007 Location: Canada Posts: 295	Re: Prime or Not Prime im going to say prime, at least i have not come up with anything yet. 9531
	guinness: easy to pour and sweet as a nut!

06-09-2007	#47 (permalink)
bns Moderator Join Date: May 2007 Location: Indiana, USA Posts: 1,648	Re: Prime or Not Prime 1021 is prime. 9531 is divisible by 3177. 1001?

06-14-2007	#48 (permalink)
metaphor- Sith Lord on Steroids. Join Date: May 2007 Location: Canada Posts: 295	Re: Prime or Not Prime not prime... 1001/7 6017
	guinness: easy to pour and sweet as a nut!

06-14-2007	#49 (permalink)
Extreme Coder ^_^; Join Date: May 2007 Location: Cairo,Egypt Posts: 1,203	Re: Prime or Not Prime not prime(my guess) 135247

06-15-2007	#50 (permalink)
DChristopher pragmatic idealist Join Date: May 2007 Posts: 190	Re: Prime or Not Prime 6017 is divisible by 547. 135247? I have no idea. Too big to do by hand. 731

06-15-2007	#51 (permalink)
masoris Discussion starter Join Date: May 2007 Location: South Korea Posts: 68	Re: Prime or Not Prime 731 not prime, it divisible by 17 123456789
	"The limits of my language mean the limits of my world." - Ludwig Wittgenstein

06-15-2007	#52 (permalink)
qtwerp Retired User Join Date: May 2007 Posts: 372	Re: Prime or Not Prime 123456789... not prime. Divisible by 3 (1+2+3+4+5+6+7+8+9 = 45... 4+5 = 9... 9%3 = 0) 1234321
qtwerp Retired User Join Date: May 2007 Posts: 372