Q: What are the prime factors of the number 1,646,656?

 A: 2, 11, 2339

Why are those the prime factors of the number 1,646,656?

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 1,646,656

1,646,656
Factor Arrows
2823,328
Factor Arrows
2411,664
Factor Arrows
2205,832
Factor Arrows
2102,916
Factor Arrows
251,458
Factor Arrows
225,729
Factor Arrows
112,339

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, 11, 2339

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 11 x 2,339 = 1,646,656

This can also be written as 26 x 111 x 2,3391 = 1,646,656

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


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