Q: What are the prime factors of the number 664,065,315?

 A: 3, 5, 23, 41, 15649

Why are those the prime factors of the number 664,065,315?

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 664,065,315

664,065,315
Factor Arrows
3221,355,105
Factor Arrows
373,785,035
Factor Arrows
514,757,007
Factor Arrows
23641,609
Factor Arrows
4115,649

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, 41, 15649

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 23 x 41 x 15,649 = 664,065,315

This can also be written as 32 x 51 x 231 x 411 x 15,6491 = 664,065,315

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


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