WATCH: What is a factor? A factor is a number that divides into another number exactly, without leaving a remainder. Find out in this KS3 Bitesize maths guide. WATCH: How to find factors using ...

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 ...

Quantum computers could one day threaten the safety of the internet by breaking encryption – and now they are a step closer. A quantum computing start-up company called Zapata has worked with IBM to ...