Q: What are the prime factors of the number 67,316,032?

 A: 2, 7, 23, 47, 139

Why are those the prime factors of the number 67,316,032?

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 67,316,032

67,316,032
Factor Arrows
233,658,016
Factor Arrows
216,829,008
Factor Arrows
28,414,504
Factor Arrows
24,207,252
Factor Arrows
22,103,626
Factor Arrows
21,051,813
Factor Arrows
7150,259
Factor Arrows
236,533
Factor Arrows
47139

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, 47, 139

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 23 x 47 x 139 = 67,316,032

This can also be written as 26 x 71 x 231 x 471 x 1391 = 67,316,032

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


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