Q: What are the prime factors of the number 13,135,863?

 A: 3, 13, 1993

Why are those the prime factors of the number 13,135,863?

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 13,135,863

13,135,863
Factor Arrows
34,378,621
Factor Arrows
13336,817
Factor Arrows
1325,909
Factor Arrows
131,993

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, 1993

We can check our work by multiplying all of the prime factors together: 3 x 13 x 13 x 13 x 1,993 = 13,135,863

This can also be written as 31 x 133 x 1,9931 = 13,135,863

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


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