Q: What are the prime factors of the number 15,950,880?

 A: 2, 3, 5, 11, 19, 53

Why are those the prime factors of the number 15,950,880?

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 15,950,880

15,950,880
Factor Arrows
27,975,440
Factor Arrows
23,987,720
Factor Arrows
21,993,860
Factor Arrows
2996,930
Factor Arrows
2498,465
Factor Arrows
3166,155
Factor Arrows
355,385
Factor Arrows
511,077
Factor Arrows
111,007
Factor Arrows
1953

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, 5, 11, 19, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 11 x 19 x 53 = 15,950,880

This can also be written as 25 x 32 x 51 x 111 x 191 x 531 = 15,950,880

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


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