Q: What are the prime factors of the number 13,481,312?

 A: 2, 13, 23, 1409

Why are those the prime factors of the number 13,481,312?

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 13,481,312

13,481,312
Factor Arrows
26,740,656
Factor Arrows
23,370,328
Factor Arrows
21,685,164
Factor Arrows
2842,582
Factor Arrows
2421,291
Factor Arrows
1332,407
Factor Arrows
231,409

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, 13, 23, 1409

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 13 x 23 x 1,409 = 13,481,312

This can also be written as 25 x 131 x 231 x 1,4091 = 13,481,312

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


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