Q: What are the prime factors of the number 531,630?

 A: 2, 3, 5, 11, 179

Why are those the prime factors of the number 531,630?

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 531,630

531,630
Factor Arrows
2265,815
Factor Arrows
388,605
Factor Arrows
329,535
Factor Arrows
39,845
Factor Arrows
51,969
Factor Arrows
11179

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, 5, 11, 179

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 11 x 179 = 531,630

This can also be written as 21 x 33 x 51 x 111 x 1791 = 531,630

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


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