Q: What are the prime factors of the number 653,913?

 A: 3, 13, 23

Why are those the prime factors of the number 653,913?

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 653,913

653,913
Factor Arrows
3217,971
Factor Arrows
372,657
Factor Arrows
324,219
Factor Arrows
38,073
Factor Arrows
32,691
Factor Arrows
3897
Factor Arrows
3299
Factor Arrows
1323

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, 13, 23

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 13 x 23 = 653,913

This can also be written as 37 x 131 x 231 = 653,913

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


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