Q: What are the prime factors of the number 72,161,412?

 A: 2, 3, 67, 89753

Why are those the prime factors of the number 72,161,412?

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 72,161,412

72,161,412
Factor Arrows
236,080,706
Factor Arrows
218,040,353
Factor Arrows
36,013,451
Factor Arrows
6789,753

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, 67, 89753

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 67 x 89,753 = 72,161,412

This can also be written as 22 x 31 x 671 x 89,7531 = 72,161,412

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


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