Q: What are the prime factors of the number 699,872?

 A: 2, 21871

Why are those the prime factors of the number 699,872?

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 699,872

699,872
Factor Arrows
2349,936
Factor Arrows
2174,968
Factor Arrows
287,484
Factor Arrows
243,742
Factor Arrows
221,871

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, 21871

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 21,871 = 699,872

This can also be written as 25 x 21,8711 = 699,872

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


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