Q: What are the prime factors of the number 220,224?

 A: 2, 3, 31, 37

Why are those the prime factors of the number 220,224?

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 220,224

220,224
Factor Arrows
2110,112
Factor Arrows
255,056
Factor Arrows
227,528
Factor Arrows
213,764
Factor Arrows
26,882
Factor Arrows
23,441
Factor Arrows
31,147
Factor Arrows
3137

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, 31, 37

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 31 x 37 = 220,224

This can also be written as 26 x 31 x 311 x 371 = 220,224

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


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