Q: What are the prime factors of the number 531,581,415?

 A: 3, 5, 17, 311, 6703

Why are those the prime factors of the number 531,581,415?

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 531,581,415

531,581,415
Factor Arrows
3177,193,805
Factor Arrows
535,438,761
Factor Arrows
172,084,633
Factor Arrows
3116,703

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, 5, 17, 311, 6703

We can check our work by multiplying all of the prime factors together: 3 x 5 x 17 x 311 x 6,703 = 531,581,415

This can also be written as 31 x 51 x 171 x 3111 x 6,7031 = 531,581,415

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


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