Q: What are the prime factors of the number 670,016?

 A: 2, 19, 29

Why are those the prime factors of the number 670,016?

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 670,016

670,016
Factor Arrows
2335,008
Factor Arrows
2167,504
Factor Arrows
283,752
Factor Arrows
241,876
Factor Arrows
220,938
Factor Arrows
210,469
Factor Arrows
19551
Factor Arrows
1929

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, 19, 29

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 19 x 19 x 29 = 670,016

This can also be written as 26 x 192 x 291 = 670,016

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


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