Q: What are the prime factors of the number 13,046,691?

 A: 3, 7, 31, 409

Why are those the prime factors of the number 13,046,691?

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 13,046,691

13,046,691
Factor Arrows
34,348,897
Factor Arrows
7621,271
Factor Arrows
788,753
Factor Arrows
712,679
Factor Arrows
31409

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, 7, 31, 409

We can check our work by multiplying all of the prime factors together: 3 x 7 x 7 x 7 x 31 x 409 = 13,046,691

This can also be written as 31 x 73 x 311 x 4091 = 13,046,691

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


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