Q: What are the prime factors of the number 631,176?

 A: 2, 3, 7, 13, 17

Why are those the prime factors of the number 631,176?

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 631,176

631,176
Factor Arrows
2315,588
Factor Arrows
2157,794
Factor Arrows
278,897
Factor Arrows
326,299
Factor Arrows
73,757
Factor Arrows
13289
Factor Arrows
1717

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, 13, 17

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 13 x 17 x 17 = 631,176

This can also be written as 23 x 31 x 71 x 131 x 172 = 631,176

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


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