Q: What are the prime factors of the number 789,824?

 A: 2, 7, 41, 43

Why are those the prime factors of the number 789,824?

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 789,824

789,824
Factor Arrows
2394,912
Factor Arrows
2197,456
Factor Arrows
298,728
Factor Arrows
249,364
Factor Arrows
224,682
Factor Arrows
212,341
Factor Arrows
71,763
Factor Arrows
4143

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, 41, 43

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 7 x 41 x 43 = 789,824

This can also be written as 26 x 71 x 411 x 431 = 789,824

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


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