Prime numbers are those that can be divided cleanly only by themselves and by 1. The first primes are 2, 3, 5, 7, 11, 13, 17, 19, and 23. Prime numbers are where imaginary mathematics begins. They are ...

Find one million consecutive positive numbers, none of which are prime. Ancient math tells us that prime numbers (2, 3, 5, 7, 11, ...,), which have no factors except for 1 and themselves, go on ...