Q: What are the prime factors of the number 561,184?

 A: 2, 13, 19, 71

Why are those the prime factors of the number 561,184?

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 561,184

561,184
Factor Arrows
2280,592
Factor Arrows
2140,296
Factor Arrows
270,148
Factor Arrows
235,074
Factor Arrows
217,537
Factor Arrows
131,349
Factor Arrows
1971

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, 13, 19, 71

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 13 x 19 x 71 = 561,184

This can also be written as 25 x 131 x 191 x 711 = 561,184

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


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