Q: What are the prime factors of the number 672,408?

 A: 2, 3, 11, 283

Why are those the prime factors of the number 672,408?

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 672,408

672,408
Factor Arrows
2336,204
Factor Arrows
2168,102
Factor Arrows
284,051
Factor Arrows
328,017
Factor Arrows
39,339
Factor Arrows
33,113
Factor Arrows
11283

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, 11, 283

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 11 x 283 = 672,408

This can also be written as 23 x 33 x 111 x 2831 = 672,408

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


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