Q: What are the prime factors of the number 105,507?

 A: 3, 19, 617

Why are those the prime factors of the number 105,507?

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 105,507

105,507
Factor Arrows
335,169
Factor Arrows
311,723
Factor Arrows
19617

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, 19, 617

We can check our work by multiplying all of the prime factors together: 3 x 3 x 19 x 617 = 105,507

This can also be written as 32 x 191 x 6171 = 105,507

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


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