Q: What are the prime factors of the number 531,313,468?

 A: 2, 7, 131, 20693

Why are those the prime factors of the number 531,313,468?

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 531,313,468

531,313,468
Factor Arrows
2265,656,734
Factor Arrows
2132,828,367
Factor Arrows
718,975,481
Factor Arrows
72,710,783
Factor Arrows
13120,693

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, 131, 20693

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 7 x 131 x 20,693 = 531,313,468

This can also be written as 22 x 72 x 1311 x 20,6931 = 531,313,468

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


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