Q: What are the prime factors of the number 798,728?

 A: 2, 7, 17, 839

Why are those the prime factors of the number 798,728?

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 798,728

798,728
Factor Arrows
2399,364
Factor Arrows
2199,682
Factor Arrows
299,841
Factor Arrows
714,263
Factor Arrows
17839

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, 7, 17, 839

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 17 x 839 = 798,728

This can also be written as 23 x 71 x 171 x 8391 = 798,728

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


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