Q: What are the prime factors of the number 220,464?

 A: 2, 3, 1531

Why are those the prime factors of the number 220,464?

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 220,464

220,464
Factor Arrows
2110,232
Factor Arrows
255,116
Factor Arrows
227,558
Factor Arrows
213,779
Factor Arrows
34,593
Factor Arrows
31,531

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, 1531

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 1,531 = 220,464

This can also be written as 24 x 32 x 1,5311 = 220,464

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


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