Identify if a number is prime or composite Reset/All Clear Identify Prime Numbers Identify Composite Numbers Prime and composite number calculator between two numbers. From: To: Show Prime Numbers Show Composite Numbers Prime and Composite Numbers What are prime numbers? Those numbers greater than 1 which upon division with any natural number except, one(1) and itself, results a decimal quotient are called prime numbers. Examples of prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 97, 197, 199, 991, 997, 9949, 9967, 9973 and so on. What are composite ...