Q: What are the prime factors of the number 13,673,472?

 A: 2, 3, 4451

Why are those the prime factors of the number 13,673,472?

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 13,673,472

13,673,472
Factor Arrows
26,836,736
Factor Arrows
23,418,368
Factor Arrows
21,709,184
Factor Arrows
2854,592
Factor Arrows
2427,296
Factor Arrows
2213,648
Factor Arrows
2106,824
Factor Arrows
253,412
Factor Arrows
226,706
Factor Arrows
213,353
Factor Arrows
34,451

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, 4451

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 4,451 = 13,673,472

This can also be written as 210 x 31 x 4,4511 = 13,673,472

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


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