Q: What are the prime factors of the number 581,327,320?

 A: 2, 5, 7, 43, 53, 911

Why are those the prime factors of the number 581,327,320?

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 581,327,320

581,327,320
Factor Arrows
2290,663,660
Factor Arrows
2145,331,830
Factor Arrows
272,665,915
Factor Arrows
514,533,183
Factor Arrows
72,076,169
Factor Arrows
4348,283
Factor Arrows
53911

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, 7, 43, 53, 911

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 43 x 53 x 911 = 581,327,320

This can also be written as 23 x 51 x 71 x 431 x 531 x 9111 = 581,327,320

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


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