Q: What are the prime factors of the number 165,528?

 A: 2, 3, 11, 19

Why are those the prime factors of the number 165,528?

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 165,528

165,528
Factor Arrows
282,764
Factor Arrows
241,382
Factor Arrows
220,691
Factor Arrows
36,897
Factor Arrows
32,299
Factor Arrows
11209
Factor Arrows
1119

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, 19

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 11 x 19 = 165,528

This can also be written as 23 x 32 x 112 x 191 = 165,528

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


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