Q: What are the prime factors of the number 581,226,464?

 A: 2, 7, 13, 17, 59, 199

Why are those the prime factors of the number 581,226,464?

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 581,226,464

581,226,464
Factor Arrows
2290,613,232
Factor Arrows
2145,306,616
Factor Arrows
272,653,308
Factor Arrows
236,326,654
Factor Arrows
218,163,327
Factor Arrows
72,594,761
Factor Arrows
13199,597
Factor Arrows
1711,741
Factor Arrows
59199

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, 13, 17, 59, 199

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 13 x 17 x 59 x 199 = 581,226,464

This can also be written as 25 x 71 x 131 x 171 x 591 x 1991 = 581,226,464

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


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