Q: What are the prime factors of the number 31,104,139?

 A: 11, 23369

Why are those the prime factors of the number 31,104,139?

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 31,104,139

31,104,139
Factor Arrows
112,827,649
Factor Arrows
11257,059
Factor Arrows
1123,369

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:

11, 23369

We can check our work by multiplying all of the prime factors together: 11 x 11 x 11 x 23,369 = 31,104,139

This can also be written as 113 x 23,3691 = 31,104,139

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


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