Q: What are the prime factors of the number 667,008?

 A: 2, 3, 193

Why are those the prime factors of the number 667,008?

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 667,008

667,008
Factor Arrows
2333,504
Factor Arrows
2166,752
Factor Arrows
283,376
Factor Arrows
241,688
Factor Arrows
220,844
Factor Arrows
210,422
Factor Arrows
25,211
Factor Arrows
31,737
Factor Arrows
3579
Factor Arrows
3193

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, 193

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 2 x 3 x 3 x 3 x 193 = 667,008

This can also be written as 27 x 33 x 1931 = 667,008

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


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