Q: What are the prime factors of the number 644,963?

 A: 11, 17, 3449

Why are those the prime factors of the number 644,963?

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 644,963

644,963
Factor Arrows
1158,633
Factor Arrows
173,449

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:

11, 17, 3449

We can check our work by multiplying all of the prime factors together: 11 x 17 x 3,449 = 644,963

This can also be written as 111 x 171 x 3,4491 = 644,963

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


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