Q: What are the prime factors of the number 561,108?

 A: 2, 3, 19, 23, 107

Why are those the prime factors of the number 561,108?

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 561,108

561,108
Factor Arrows
2280,554
Factor Arrows
2140,277
Factor Arrows
346,759
Factor Arrows
192,461
Factor Arrows
23107

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, 19, 23, 107

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 19 x 23 x 107 = 561,108

This can also be written as 22 x 31 x 191 x 231 x 1071 = 561,108

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


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