Q: What are the prime factors of the number 72,669,632?

 A: 2, 7, 162209

Why are those the prime factors of the number 72,669,632?

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 72,669,632

72,669,632
Factor Arrows
236,334,816
Factor Arrows
218,167,408
Factor Arrows
29,083,704
Factor Arrows
24,541,852
Factor Arrows
22,270,926
Factor Arrows
21,135,463
Factor Arrows
7162,209

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, 162209

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 7 x 162,209 = 72,669,632

This can also be written as 26 x 71 x 162,2091 = 72,669,632

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


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