Q: What are the prime factors of the number 17,987,112?

 A: 2, 3, 11, 13, 1747

Why are those the prime factors of the number 17,987,112?

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 17,987,112

17,987,112
Factor Arrows
28,993,556
Factor Arrows
24,496,778
Factor Arrows
22,248,389
Factor Arrows
3749,463
Factor Arrows
3249,821
Factor Arrows
1122,711
Factor Arrows
131,747

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, 13, 1747

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 11 x 13 x 1,747 = 17,987,112

This can also be written as 23 x 32 x 111 x 131 x 1,7471 = 17,987,112

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


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