Comments on: Another Look at Prime Numbers http://betterexplained.com/articles/another-look-at-prime-numbers/ Learning shouldn't hurt. Let's share the insights that made difficult ideas click. Fri, 20 Nov 2009 14:09:06 -0800 http://wordpress.org/?v=2.8.4 hourly 1 By: Kalid http://betterexplained.com/articles/another-look-at-prime-numbers/#comment-242601 Kalid Sat, 30 May 2009 10:48:08 +0000 http://betterexplained.com/articles/another-look-at-prime-numbers/#comment-242601 @Steve: Awesome, glad it is coming in handy! Yes, I like that trick about the digits adding up. @Steve: Awesome, glad it is coming in handy! Yes, I like that trick about the digits adding up.

]]> By: Steve http://betterexplained.com/articles/another-look-at-prime-numbers/#comment-242541 Steve Sat, 30 May 2009 04:52:31 +0000 http://betterexplained.com/articles/another-look-at-prime-numbers/#comment-242541 Also, small addition here. Any number with a 3 can have its digits tallied and they will also be divisible by 3. For example, 141 (47*3) = 1+4+1 = 6, also 196605 (65535*3) = 1+9+6+6+0+5 = 10+12+5 = 27 = 2+7 = 9. Etc. Thank you for setting this site up. I have never studied Calculus, always considered it the Devil's answer to real thought. Now I am heading back to school to get my degree in programming, and have found this site fantastic. Many many thanks. Also, small addition here.

Any number with a 3 can have its digits tallied and they will also be divisible by 3. For example, 141 (47*3) = 1+4+1 = 6, also 196605 (65535*3) = 1+9+6+6+0+5 = 10+12+5 = 27 = 2+7 = 9. Etc.

Thank you for setting this site up. I have never studied Calculus, always considered it the Devil’s answer to real thought. Now I am heading back to school to get my degree in programming, and have found this site fantastic.

Many many thanks.

]]> By: Better Explained « Xavier Seton’s Blog http://betterexplained.com/articles/another-look-at-prime-numbers/#comment-239471 Better Explained « Xavier Seton’s Blog Thu, 07 May 2009 07:35:19 +0000 http://betterexplained.com/articles/another-look-at-prime-numbers/#comment-239471 [...] Numbers: number systems, visual arithmetic, different bases, Prime numbers [...] [...] Numbers: number systems, visual arithmetic, different bases, Prime numbers [...]

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