Q: What are the prime factors of the number 172,115,319?

 A: 3, 19, 29, 104123

Why are those the prime factors of the number 172,115,319?

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 172,115,319

172,115,319
Factor Arrows
357,371,773
Factor Arrows
193,019,567
Factor Arrows
29104,123

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, 19, 29, 104123

We can check our work by multiplying all of the prime factors together: 3 x 19 x 29 x 104,123 = 172,115,319

This can also be written as 31 x 191 x 291 x 104,1231 = 172,115,319

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


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