Q: What are the prime factors of the number 63,123,320?

 A: 2, 5, 13, 19, 6389

Why are those the prime factors of the number 63,123,320?

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 63,123,320

63,123,320
Factor Arrows
231,561,660
Factor Arrows
215,780,830
Factor Arrows
27,890,415
Factor Arrows
51,578,083
Factor Arrows
13121,391
Factor Arrows
196,389

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, 13, 19, 6389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 13 x 19 x 6,389 = 63,123,320

This can also be written as 23 x 51 x 131 x 191 x 6,3891 = 63,123,320

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


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