Q: What are the prime factors of the number 405,199,995?

 A: 3, 5, 683, 39551

Why are those the prime factors of the number 405,199,995?

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 405,199,995

405,199,995
Factor Arrows
3135,066,665
Factor Arrows
527,013,333
Factor Arrows
68339,551

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, 683, 39551

We can check our work by multiplying all of the prime factors together: 3 x 5 x 683 x 39,551 = 405,199,995

This can also be written as 31 x 51 x 6831 x 39,5511 = 405,199,995

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


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