Sometimes you are given numbers expressed as a product of prime factors. For example, 8 = 2 3 and 90 = 2 × 3 2 × 5. If you want to find the LCM and HCF in an exam, we can use prime factor form ...

KS3 Maths Prime numbers, factors and multiples learning resources for adults, children, parents and teachers.

Prime Numbers: Check definition of prime numbers, list from 1 to 1000, examples, applications and frequently asked questions regarding prime numbers.