Q: What are the prime factors of the number 791,648?

 A: 2, 11, 13, 173

Why are those the prime factors of the number 791,648?

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 791,648

791,648
Factor Arrows
2395,824
Factor Arrows
2197,912
Factor Arrows
298,956
Factor Arrows
249,478
Factor Arrows
224,739
Factor Arrows
112,249
Factor Arrows
13173

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, 11, 13, 173

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 13 x 173 = 791,648

This can also be written as 25 x 111 x 131 x 1731 = 791,648

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


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