This calculator identifies whether the number is a prime or a composite.

Natural number is the positive integer number which is used for counting. For example, 1, 2, 3, 4, 5, 6, 7 ....

Prime number is a whole number greater than 1 whose only divisors are 1 and itself. For example, 5 is a prime number. Its divisors are 1 and 5.

Composite number is an opposite of prime number which has more than two divisors. For example, 10 is a composite number. Its divisors are 1, 2, 5, 10.