[Tutor] help with prime number program

[Norman Silverstone]

> > Thank you for your comment which, if I understand you correctly, implies
> > that prime numbers greater than 25 will not be recognised. Surely, that
> > cannot be correct. However, if it is correct, could you please
> > demonstrate what you mean for my education.
> 
> More precisely, it will give an incorrect answer for any non-prime that is not divisible by 2 or 3, for example 25. 
> 
>  >>> def test(n):
>  ...   if n % 2 != 0 and n % 3 != 0:
>  ...     print n, 'is prime'
>  ...
>  >>> test(2)
>  >>> test(3)
> 
> Hmm, not looking so good for 2 and 3 either...
>  >>> test(4)
>  >>> test(5)
> 5 is prime
>  >>> test(25)
> 25 is prime
> 
> Not so sure about that one either!

 How right you and Glen are and I am not very bright!! I must think
again and thanks.

Norman