Q: What are the prime factors of the number 725,622,543?

 A: 3, 17, 29, 673

Why are those the prime factors of the number 725,622,543?

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 725,622,543

725,622,543
Factor Arrows
3241,874,181
Factor Arrows
380,624,727
Factor Arrows
326,874,909
Factor Arrows
38,958,303
Factor Arrows
32,986,101
Factor Arrows
3995,367
Factor Arrows
3331,789
Factor Arrows
1719,517
Factor Arrows
29673

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:

3, 17, 29, 673

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 17 x 29 x 673 = 725,622,543

This can also be written as 37 x 171 x 291 x 6731 = 725,622,543

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


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