100 . These numbers have only two divisors, 1 and the number itself. 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97 Natural numbers greater than 1 that are not prime are called composite . Therefore, 1 is not prime, since it has only one divisor, namely 1. However, 2 and 3 are prime, since they have exactly two