Q: What are the prime factors of the number 622,656?

 A: 2, 3, 23, 47

Why are those the prime factors of the number 622,656?

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 622,656

622,656
Factor Arrows
2311,328
Factor Arrows
2155,664
Factor Arrows
277,832
Factor Arrows
238,916
Factor Arrows
219,458
Factor Arrows
29,729
Factor Arrows
33,243
Factor Arrows
31,081
Factor Arrows
2347

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, 23, 47

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 23 x 47 = 622,656

This can also be written as 26 x 32 x 231 x 471 = 622,656

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


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