Q: What are the prime factors of the number 797,920?

 A: 2, 5, 4987

Why are those the prime factors of the number 797,920?

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 797,920

797,920
Factor Arrows
2398,960
Factor Arrows
2199,480
Factor Arrows
299,740
Factor Arrows
249,870
Factor Arrows
224,935
Factor Arrows
54,987

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, 4987

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 4,987 = 797,920

This can also be written as 25 x 51 x 4,9871 = 797,920

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


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