Q: What are the prime factors of the number 31,034,475?

 A: 3, 5, 23, 1999

Why are those the prime factors of the number 31,034,475?

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 31,034,475

31,034,475
Factor Arrows
310,344,825
Factor Arrows
33,448,275
Factor Arrows
31,149,425
Factor Arrows
5229,885
Factor Arrows
545,977
Factor Arrows
231,999

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, 23, 1999

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 5 x 23 x 1,999 = 31,034,475

This can also be written as 33 x 52 x 231 x 1,9991 = 31,034,475

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


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