Q: What are the prime factors of the number 659,664?

 A: 2, 3, 509

Why are those the prime factors of the number 659,664?

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 659,664

659,664
Factor Arrows
2329,832
Factor Arrows
2164,916
Factor Arrows
282,458
Factor Arrows
241,229
Factor Arrows
313,743
Factor Arrows
34,581
Factor Arrows
31,527
Factor Arrows
3509

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, 509

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 509 = 659,664

This can also be written as 24 x 34 x 5091 = 659,664

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


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