The inverse function of "Prime"
12374
Approximation to the prime counting function
139582
Converse of "localization at a prime is local"
152231
Computing the product of p/(p - 2) over the odd primes
39391
IMO 2005 No 4. : All integers relatively prime to terms of infinite sequence
30045
Solving linear congruences by hand: modular fractions and inverses
75733
Divisibility of prime numbers
20801
Application of inverse function theorem for several variable functions
6702
Intuition for the prime number theorem
44148
Functions that are their own inverse.
127664
Inverse elements in the absence of identities/associativity.
123033
Showing a number $n$ is prime if $(n-2)! \equiv 1 \pmod n$
124523
Finding an Inverse Function and Composition of Functions?
101454
Chebyshev Polynomials and Primality Testing
144592
how to prove the existence and uniqueness of the prime factorization of any natural number.
39698
On uniqueness of sums of prime powers
35034
Multiplicative inverses for $Z_n$
78259
Prime factorization