If he succeeds in finding a pattern in prime numbers, he will hold the key to every computer in the world. Actor Quintessa Swindell, who stars alongside Woodall, shares what it was like working on ...

Start with the smallest numbers and work your way up. It might help if you draw out a grid so you can spot any patterns. Here's one way to find all the prime numbers. 2 is the first prime number.

Find out about common factors, which are factors shared by two or more numbers. Prime numbers Find out what a prime number is and put your knowledge to the test. What are square and cube numbers?