Q: What are the prime factors of the number 172,151,504?

 A: 2, 7, 23, 9547

Why are those the prime factors of the number 172,151,504?

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 172,151,504

172,151,504
Factor Arrows
286,075,752
Factor Arrows
243,037,876
Factor Arrows
221,518,938
Factor Arrows
210,759,469
Factor Arrows
71,537,067
Factor Arrows
7219,581
Factor Arrows
239,547

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, 7, 23, 9547

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 7 x 23 x 9,547 = 172,151,504

This can also be written as 24 x 72 x 231 x 9,5471 = 172,151,504

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


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