Q: What are the prime factors of the number 222,120?

 A: 2, 3, 5, 617

Why are those the prime factors of the number 222,120?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 222,120

222,120
Factor Arrows
2111,060
Factor Arrows
255,530
Factor Arrows
227,765
Factor Arrows
39,255
Factor Arrows
33,085
Factor Arrows
5617

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 5, 617

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 617 = 222,120

This can also be written as 23 x 32 x 51 x 6171 = 222,120

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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