Re: prime numbers and African artifact

Peter Seebach (seebs@solutions.solon.com)
11 Jul 1995 20:44:16 -0500

> What's the easy way to show that 254365465431652436514232 is not
>prime again?

Simple!

2 + 5 + 4 + 3 + 6 + 5 + 4 + 6 + 5 + 4 + 3 + 1 +
6 + 5 + 2 + 4 + 3 + 6 + 5 + 1 + 4 + 2 + 3 + 2 = 91

9 + 1 = 10.

1 + 0 = 1.

1 is not a multiple of three, so the whole number is not a multiple of
three, so it must be prime!

-s

-- 

Peter Seebach - seebs@solon.com  -- seebs@intran.xerox.com

All the arrogant jerks who object to stereotypes are all alike.

C/Unix proto-wizard -- C/Unix questions? Send mail for help.

Copyright 1995 Peter Seebach.  Not for distribution through Microsoft Network.