Q: What are the prime factors of the number 69,173,136?

 A: 2, 3, 17, 9419

Why are those the prime factors of the number 69,173,136?

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 69,173,136

69,173,136
Factor Arrows
234,586,568
Factor Arrows
217,293,284
Factor Arrows
28,646,642
Factor Arrows
24,323,321
Factor Arrows
31,441,107
Factor Arrows
3480,369
Factor Arrows
3160,123
Factor Arrows
179,419

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, 17, 9419

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 17 x 9,419 = 69,173,136

This can also be written as 24 x 33 x 171 x 9,4191 = 69,173,136

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


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