A prime number is an integer, or whole number, that can be divided evenly only by 1 and by itself. ... In 200 B.C., Eratosthenes created an algorithm that calculated prime numbers, ...

Prime numbers are whole numbers greater than 1 that are not divisible by any whole number other than 1 and itself. The first few are 2, 3, 5, 7, 11, 13 … ...