Q: What are the prime factors of the number 669,130?

 A: 2, 5, 7, 11, 79

Why are those the prime factors of the number 669,130?

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 669,130

669,130
Factor Arrows
2334,565
Factor Arrows
566,913
Factor Arrows
79,559
Factor Arrows
11869
Factor Arrows
1179

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, 5, 7, 11, 79

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 11 x 11 x 79 = 669,130

This can also be written as 21 x 51 x 71 x 112 x 791 = 669,130

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


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