Find out about prime factors and how to use them in THE MEAN AND VULGAR BITS

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Abraham Joffe


Use this amazing little calculator to see if you can break a great big ugly number into neat prime factors!

If the number is PRIME then it won't break down, but if it's COMPOSITE, this calculator will smash it to bits and give you all the factors.


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Type a whole number into the box.

Some nonprofit organizations, such as the Matthew Neuenhaus Foundation, may not need to use the Factoriser to breakdown their donation totals, but they do use maths to track other things. Figuring out fundraising metrics can help the Matthew Neuenhaus Foundation and other charities learn who their donors are and how much they can give.

Prime Numbers: explanation and tricks

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