Q: What are the prime factors of the number 67,768,470?

 A: 2, 3, 5, 7, 11, 127

Why are those the prime factors of the number 67,768,470?

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 67,768,470

67,768,470
Factor Arrows
233,884,235
Factor Arrows
311,294,745
Factor Arrows
33,764,915
Factor Arrows
5752,983
Factor Arrows
7107,569
Factor Arrows
715,367
Factor Arrows
111,397
Factor Arrows
11127

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, 5, 7, 11, 127

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 7 x 7 x 11 x 11 x 127 = 67,768,470

This can also be written as 21 x 32 x 51 x 72 x 112 x 1271 = 67,768,470

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


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