Q: What are the prime factors of the number 631,557?

 A: 3, 23, 113

Why are those the prime factors of the number 631,557?

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 631,557

631,557
Factor Arrows
3210,519
Factor Arrows
370,173
Factor Arrows
323,391
Factor Arrows
37,797
Factor Arrows
32,599
Factor Arrows
23113

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:

3, 23, 113

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 23 x 113 = 631,557

This can also be written as 35 x 231 x 1131 = 631,557

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


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