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

Prime Number Notes: This article presents well drafted notes on Prime Numbers which will help students clear their concepts of this prominent part of number theory. Download notes in PDF.

Highest common factor The highest common factor (abbreviated to HCF) is the largest number that goes into two or more subject-numbers. For example, the common factors of 40 and 16 are 2, 4 and 8.

Learn about and revise different types of numbers such as primes, factors, multiples and powers with GCSE Bitesize OCR Maths.

I could play this game for a while, and you can, too by simply visiting this website and calculating the prime factorization of any phone number you like.