Q: What are the prime factors of the number 530,670?

 A: 2, 3, 5, 7, 19

Why are those the prime factors of the number 530,670?

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 530,670

530,670
Factor Arrows
2265,335
Factor Arrows
388,445
Factor Arrows
517,689
Factor Arrows
72,527
Factor Arrows
7361
Factor Arrows
1919

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, 7, 19

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 7 x 7 x 19 x 19 = 530,670

This can also be written as 21 x 31 x 51 x 72 x 192 = 530,670

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


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