Q: What are the prime factors of the number 117,172,718?

 A: 2, 13, 23, 53, 3697

Why are those the prime factors of the number 117,172,718?

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 117,172,718

117,172,718
Factor Arrows
258,586,359
Factor Arrows
134,506,643
Factor Arrows
23195,941
Factor Arrows
533,697

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:

2, 13, 23, 53, 3697

We can check our work by multiplying all of the prime factors together: 2 x 13 x 23 x 53 x 3,697 = 117,172,718

This can also be written as 21 x 131 x 231 x 531 x 3,6971 = 117,172,718

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


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