Another way to think of prime numbers is that they are only ever found as answers in their own times tables. 11 is a prime number because the only factors of 11 are 1 and 11 (\(1 \times 11 = 11\)).

You have most likely heard the term factor before. A factor is a number that goes into another. The factors of 10 for example are 1, 2, 5 and 10. Prime numbers are a special set of numbers that ...