Q: What are the prime factors of the number 15,603,984?

 A: 2, 3, 11, 9851

Why are those the prime factors of the number 15,603,984?

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 15,603,984

15,603,984
Factor Arrows
27,801,992
Factor Arrows
23,900,996
Factor Arrows
21,950,498
Factor Arrows
2975,249
Factor Arrows
3325,083
Factor Arrows
3108,361
Factor Arrows
119,851

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, 11, 9851

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 11 x 9,851 = 15,603,984

This can also be written as 24 x 32 x 111 x 9,8511 = 15,603,984

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


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