Q: What are the prime factors of the number 13,174,272?

 A: 2, 3, 953

Why are those the prime factors of the number 13,174,272?

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 13,174,272

13,174,272
Factor Arrows
26,587,136
Factor Arrows
23,293,568
Factor Arrows
21,646,784
Factor Arrows
2823,392
Factor Arrows
2411,696
Factor Arrows
2205,848
Factor Arrows
2102,924
Factor Arrows
251,462
Factor Arrows
225,731
Factor Arrows
38,577
Factor Arrows
32,859
Factor Arrows
3953

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, 953

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 3 x 3 x 3 x 953 = 13,174,272

This can also be written as 29 x 33 x 9531 = 13,174,272

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


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