Q: What are the prime factors of the number 666,630?

 A: 2, 3, 5, 823

Why are those the prime factors of the number 666,630?

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 666,630

666,630
Factor Arrows
2333,315
Factor Arrows
3111,105
Factor Arrows
337,035
Factor Arrows
312,345
Factor Arrows
34,115
Factor Arrows
5823

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, 823

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 5 x 823 = 666,630

This can also be written as 21 x 34 x 51 x 8231 = 666,630

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


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