Enter and check to see if a number is prime with this online tool.
A prime number is a whole number greater than 1 that can only be divided by itself and the number 1. For example the number 7 can only be divided into a whole number by 7 or 1 so it's a prime number. 8 on the other hand can be divided by itself and 1 as well as 2 and 4 so it is not prime.
Want to generate a random prime number out of 50,000 different prime numbers? This tool here can do that for you.