Q: What are the prime factors of the number 172,135,344?

 A: 2, 3, 181, 19813

Why are those the prime factors of the number 172,135,344?

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 172,135,344

172,135,344
Factor Arrows
286,067,672
Factor Arrows
243,033,836
Factor Arrows
221,516,918
Factor Arrows
210,758,459
Factor Arrows
33,586,153
Factor Arrows
18119,813

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, 3, 181, 19813

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 181 x 19,813 = 172,135,344

This can also be written as 24 x 31 x 1811 x 19,8131 = 172,135,344

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


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