Q: What are the prime factors of the number 18,072?

 A: 2, 3, 251

Why are those the prime factors of the number 18,072?

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 18,072

18,072
Factor Arrows
29,036
Factor Arrows
24,518
Factor Arrows
22,259
Factor Arrows
3753
Factor Arrows
3251

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, 251

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 251 = 18,072

This can also be written as 23 x 32 x 2511 = 18,072

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


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