Q: What are the prime factors of the number 13,105,161?

 A: 3, 89, 16361

Why are those the prime factors of the number 13,105,161?

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 13,105,161

13,105,161
Factor Arrows
34,368,387
Factor Arrows
31,456,129
Factor Arrows
8916,361

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, 89, 16361

We can check our work by multiplying all of the prime factors together: 3 x 3 x 89 x 16,361 = 13,105,161

This can also be written as 32 x 891 x 16,3611 = 13,105,161

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


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