Q: What are the prime factors of the number 118,404?

 A: 2, 3, 11, 13, 23

Why are those the prime factors of the number 118,404?

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 118,404

118,404
Factor Arrows
259,202
Factor Arrows
229,601
Factor Arrows
39,867
Factor Arrows
33,289
Factor Arrows
11299
Factor Arrows
1323

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, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 11 x 13 x 23 = 118,404

This can also be written as 22 x 32 x 111 x 131 x 231 = 118,404

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


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