Q: What are the prime factors of the number 15,315,079?

 A: 13, 17, 23, 131

Why are those the prime factors of the number 15,315,079?

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 15,315,079

15,315,079
Factor Arrows
131,178,083
Factor Arrows
1769,299
Factor Arrows
233,013
Factor Arrows
23131

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:

13, 17, 23, 131

We can check our work by multiplying all of the prime factors together: 13 x 17 x 23 x 23 x 131 = 15,315,079

This can also be written as 131 x 171 x 232 x 1311 = 15,315,079

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


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