Q: What are the prime factors of the number 173,680?

 A: 2, 5, 13, 167

Why are those the prime factors of the number 173,680?

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 173,680

173,680
Factor Arrows
286,840
Factor Arrows
243,420
Factor Arrows
221,710
Factor Arrows
210,855
Factor Arrows
52,171
Factor Arrows
13167

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, 5, 13, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 13 x 167 = 173,680

This can also be written as 24 x 51 x 131 x 1671 = 173,680

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


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