Yes, you are right. (Happy)

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- July 11th 2010, 02:56 PMBen92
Yes, you are right. (Happy)

- July 11th 2010, 06:10 PMmelese
Hello chiph588@, I think I've found what you're looking for, namely a sufficient and necessary condition of the divisibility of by a prime in general!

A prime divides if and only if the fractional part for at least one . In particular, when .

For example, and indeed ; ; and so on...

Another example, the one that you gave here is and as you noted , but if you continue . - July 11th 2010, 06:12 PMchiph588@
- July 11th 2010, 08:43 PMBen92
Me too.