I've passed by this article: http://gauravtiwari.org/2011/12/11/claim-for-a-prime-number-formula/
They say that there is a formula such that when you give it (n) then it returns the n-th prime number. Where other articles states that no formula discovered so far that does such thing.
If the formula exists indeed, then why from time to time they discover a new largest prime number known ever. It would be very simple using the formula to find a larger one.
I just want to ensure whether such formula exists or not.