Prime numbers and how to find them
Prime numbers have now become a crucial part of modern life, but they have been fascinating mathematicians for thousands of years. A prime number is always bigger than 1 and can only be divided by itself and 1 – no other number will divide in to it. So the number 2 is the first prime number, then 3, 5, 7, and so on. Non-prime numbers are defined as composite numbers (they are composed of other smaller numbers).