Revise, multiples and factors, prime, square and cube numbers, the product of prime factors, and powers and roots with this GCSE maths guide.

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.

This is why primes are so relevant in certain fields — primes have very special properties for factorization. One of those properties is that while it is relatively easy to find larger prime ...

Prime Factorization of Mathematical Expressions. An example of a composite mathematical expression is 6x squared times 5x plus 15. To write this expression as a product of primes, we must factor it ...

The fundamental theorem underpins this difficulty because it means in the entire space of numbers, each number has but one set of prime factors. It also means that brute-force attacking such ...