A prime factor is a natural number, other than 1, whose only factors are 1 and itself. The first few prime numbers are actually 2, 3, 5, 7, 11, and so on. Now we can also use what’s called prime ...

There are many methods to find the prime factors of a number, but one of the most common is to use a prime factor tree. Firstly, find two numbers that will multiply together to give 40. These are ...

It would take a long time to write out all the factors and multiples of 24 and 180 and compare the lists and it would be easy to make a mistake. A more efficient method is to use prime factors. Using ...