Q: What are the prime factors of the number 725,227,740?

 A: 2, 3, 5, 293, 13751

Why are those the prime factors of the number 725,227,740?

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 725,227,740

725,227,740
Factor Arrows
2362,613,870
Factor Arrows
2181,306,935
Factor Arrows
360,435,645
Factor Arrows
320,145,215
Factor Arrows
54,029,043
Factor Arrows
29313,751

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, 5, 293, 13751

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 293 x 13,751 = 725,227,740

This can also be written as 22 x 32 x 51 x 2931 x 13,7511 = 725,227,740

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


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