Q: What are the prime factors of the number 656,544?

 A: 2, 3, 7, 977

Why are those the prime factors of the number 656,544?

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 656,544

656,544
Factor Arrows
2328,272
Factor Arrows
2164,136
Factor Arrows
282,068
Factor Arrows
241,034
Factor Arrows
220,517
Factor Arrows
36,839
Factor Arrows
7977

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, 7, 977

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 977 = 656,544

This can also be written as 25 x 31 x 71 x 9771 = 656,544

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


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