Q: What are the prime factors of the number 700,872?

 A: 2, 3, 19, 29, 53

Why are those the prime factors of the number 700,872?

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 700,872

700,872
Factor Arrows
2350,436
Factor Arrows
2175,218
Factor Arrows
287,609
Factor Arrows
329,203
Factor Arrows
191,537
Factor Arrows
2953

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, 19, 29, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 19 x 29 x 53 = 700,872

This can also be written as 23 x 31 x 191 x 291 x 531 = 700,872

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


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