Q: What are the prime factors of the number 531,822,872?

 A: 2, 7, 193813

Why are those the prime factors of the number 531,822,872?

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 531,822,872

531,822,872
Factor Arrows
2265,911,436
Factor Arrows
2132,955,718
Factor Arrows
266,477,859
Factor Arrows
79,496,837
Factor Arrows
71,356,691
Factor Arrows
7193,813

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, 193813

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 7 x 7 x 193,813 = 531,822,872

This can also be written as 23 x 73 x 193,8131 = 531,822,872

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


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