Is there a function that will give me nth prime number? Possible Duplicate:
  Is there a known mathematical equation to find the nth prime?  




Is there a function, like f(n), I insert n  into the function and it outputs nth prime number? I have been trying to find a pattern between the prime numbers, 1st differences, 2nd differences, but I can't find it.

To be clear: I want something like f(x)=x^2+5 or f(x)=2.sin(x)+x^2. You know what I mean...
Well yes, the function $f$ does exist, but that doesn't mean we know what it looks like.
Well yes, the function $f$ does exist, but that doesn't mean we know what it looks like.