Q: What are the prime factors of the number 670,700?

 A: 2, 5, 19, 353

Why are those the prime factors of the number 670,700?

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 670,700

670,700
Factor Arrows
2335,350
Factor Arrows
2167,675
Factor Arrows
533,535
Factor Arrows
56,707
Factor Arrows
19353

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, 5, 19, 353

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 19 x 353 = 670,700

This can also be written as 22 x 52 x 191 x 3531 = 670,700

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


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