Q: What are the prime factors of the number 581,388,444?

 A: 2, 3, 7, 13, 103, 1723

Why are those the prime factors of the number 581,388,444?

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 581,388,444

581,388,444
Factor Arrows
2290,694,222
Factor Arrows
2145,347,111
Factor Arrows
348,449,037
Factor Arrows
316,149,679
Factor Arrows
72,307,097
Factor Arrows
13177,469
Factor Arrows
1031,723

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, 3, 7, 13, 103, 1723

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 13 x 103 x 1,723 = 581,388,444

This can also be written as 22 x 32 x 71 x 131 x 1031 x 1,7231 = 581,388,444

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


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