Do you want to find out if a certain number is prime? Wait no more! You have come to the right place! You are just one click away from the answer.

By the way, if the number is not prime, the embedded script will show you a factorization of said number, otherwise, it will tell you what is the integer part of its square root. You may be wondering, why the square root is relevant? It turns out that if a number is not divisible by any number less than its square root, then we are dealing with a prime number; in other words, the integer part of the square root is a good stopping criterion when we want to find out if a number is prime or not. Let that sink in.