Q: What are the prime factors of the number 165,807?

 A: 3, 23, 89

Why are those the prime factors of the number 165,807?

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 165,807

165,807
Factor Arrows
355,269
Factor Arrows
318,423
Factor Arrows
36,141
Factor Arrows
32,047
Factor Arrows
2389

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:

3, 23, 89

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 23 x 89 = 165,807

This can also be written as 34 x 231 x 891 = 165,807

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


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