Prime and Composite Numbers Having some fun learning Prime and Composite numbers! Prime Numbers Prime numbers are those which have only two factors. 1 and the number itself. Eg: 2, 3, 5, 7, 11, 13, 17 and 19 are the prime numbers between 1 and 20. Composite NumbersĀ  Numbers which have more than two factors are called composite… Continue reading Prime and Composite Numbers