Q: What are the prime factors of the number 13,205,101?

 A: 7, 13, 31, 151

Why are those the prime factors of the number 13,205,101?

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 13,205,101

13,205,101
Factor Arrows
71,886,443
Factor Arrows
13145,111
Factor Arrows
314,681
Factor Arrows
31151

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:

7, 13, 31, 151

We can check our work by multiplying all of the prime factors together: 7 x 13 x 31 x 31 x 151 = 13,205,101

This can also be written as 71 x 131 x 312 x 1511 = 13,205,101

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


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