Q: What are the prime factors of the number 52,800,391?

 A: 7, 21991

Why are those the prime factors of the number 52,800,391?

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 52,800,391

52,800,391
Factor Arrows
77,542,913
Factor Arrows
71,077,559
Factor Arrows
7153,937
Factor Arrows
721,991

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:

7, 21991

We can check our work by multiplying all of the prime factors together: 7 x 7 x 7 x 7 x 21,991 = 52,800,391

This can also be written as 74 x 21,9911 = 52,800,391

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


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