Q: What are the prime factors of the number 523,355,440?

 A: 2, 5, 709, 9227

Why are those the prime factors of the number 523,355,440?

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 523,355,440

523,355,440
Factor Arrows
2261,677,720
Factor Arrows
2130,838,860
Factor Arrows
265,419,430
Factor Arrows
232,709,715
Factor Arrows
56,541,943
Factor Arrows
7099,227

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, 709, 9227

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 709 x 9,227 = 523,355,440

This can also be written as 24 x 51 x 7091 x 9,2271 = 523,355,440

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


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