Q: What are the prime factors of the number 118,800?

 A: 2, 3, 5, 11

Why are those the prime factors of the number 118,800?

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 118,800

118,800
Factor Arrows
259,400
Factor Arrows
229,700
Factor Arrows
214,850
Factor Arrows
27,425
Factor Arrows
32,475
Factor Arrows
3825
Factor Arrows
3275
Factor Arrows
555
Factor Arrows
511

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

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 3 x 5 x 5 x 11 = 118,800

This can also be written as 24 x 33 x 52 x 111 = 118,800

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


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