Q: What are the prime factors of the number 13,151,360?

 A: 2, 5, 20549

Why are those the prime factors of the number 13,151,360?

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 13,151,360

13,151,360
Factor Arrows
26,575,680
Factor Arrows
23,287,840
Factor Arrows
21,643,920
Factor Arrows
2821,960
Factor Arrows
2410,980
Factor Arrows
2205,490
Factor Arrows
2102,745
Factor Arrows
520,549

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, 5, 20549

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 5 x 20,549 = 13,151,360

This can also be written as 27 x 51 x 20,5491 = 13,151,360

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


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