Q: What are the prime factors of the number 63,189,280?

 A: 2, 5, 7, 11, 23, 223

Why are those the prime factors of the number 63,189,280?

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 63,189,280

63,189,280
Factor Arrows
231,594,640
Factor Arrows
215,797,320
Factor Arrows
27,898,660
Factor Arrows
23,949,330
Factor Arrows
21,974,665
Factor Arrows
5394,933
Factor Arrows
756,419
Factor Arrows
115,129
Factor Arrows
23223

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, 7, 11, 23, 223

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 11 x 23 x 223 = 63,189,280

This can also be written as 25 x 51 x 71 x 111 x 231 x 2231 = 63,189,280

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


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