On Wed, 16 Nov 2005, Russell McMahon wrote: >>> (Only the same 8 numbers within any given 30 sequentially numbered >>> group are potentially prime). > >> Except for 0 to 30, which has 10 or 11 primes (depending on how you >> feel about "1") ? Even without 2, there are still more than 8 primes. > > Error 314159: > Invalid range specified Range 0 - 30 contains more than 30 numbers. > Please respecify. 0 is not a candidate for primes (division by zero is a bigger error than not being a prime ;-) Peter -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist