number series

How Many Primes Are There Under 400? List of Prime Numbers From 1 to 500 What are composite numbers 1 to 400? The first 100 whole numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,26, 27,