Q: What are the prime factors of the number 168,504?

 A: 2, 3, 7, 17, 59

Why are those the prime factors of the number 168,504?

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 168,504

168,504
Factor Arrows
284,252
Factor Arrows
242,126
Factor Arrows
221,063
Factor Arrows
37,021
Factor Arrows
71,003
Factor Arrows
1759

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, 7, 17, 59

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 17 x 59 = 168,504

This can also be written as 23 x 31 x 71 x 171 x 591 = 168,504

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


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