Q: What are the prime factors of the number 72,072,072?

 A: 2, 3, 333667

Why are those the prime factors of the number 72,072,072?

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 72,072,072

72,072,072
Factor Arrows
236,036,036
Factor Arrows
218,018,018
Factor Arrows
29,009,009
Factor Arrows
33,003,003
Factor Arrows
31,001,001
Factor Arrows
3333,667

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, 333667

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 333,667 = 72,072,072

This can also be written as 23 x 33 x 333,6671 = 72,072,072

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


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