Check Prime Number Calculator - Domainconverters

Q.What is a prime number.?

Prime number is a natural number greater than 1 with exactly two distinct natural number divisors: 1 and itself, a composite number is a positive integer greater than 1 that has more than two positive divisors. For instance, a composite number 8 has 1, 2, 4 and 8 as factors while 5 being a prime number has only two factors 1 and 5.

The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29.

This Prime Number Calculator performs primality test and checks if a positive number is prime.


Please enter a positive integer to check.