Q: What are the prime factors of the number 788,420?

 A: 2, 5, 79, 499

Why are those the prime factors of the number 788,420?

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 788,420

788,420
Factor Arrows
2394,210
Factor Arrows
2197,105
Factor Arrows
539,421
Factor Arrows
79499

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, 79, 499

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 79 x 499 = 788,420

This can also be written as 22 x 51 x 791 x 4991 = 788,420

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


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