Q: What are the prime factors of the number 667,361,766?

 A: 2, 3, 73, 641, 2377

Why are those the prime factors of the number 667,361,766?

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 667,361,766

667,361,766
Factor Arrows
2333,680,883
Factor Arrows
3111,226,961
Factor Arrows
731,523,657
Factor Arrows
6412,377

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, 73, 641, 2377

We can check our work by multiplying all of the prime factors together: 2 x 3 x 73 x 641 x 2,377 = 667,361,766

This can also be written as 21 x 31 x 731 x 6411 x 2,3771 = 667,361,766

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


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