Q: What are the prime factors of the number 664,135,430?

 A: 2, 5, 7, 17, 43, 12979

Why are those the prime factors of the number 664,135,430?

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 664,135,430

664,135,430
Factor Arrows
2332,067,715
Factor Arrows
566,413,543
Factor Arrows
79,487,649
Factor Arrows
17558,097
Factor Arrows
4312,979

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, 5, 7, 17, 43, 12979

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 17 x 43 x 12,979 = 664,135,430

This can also be written as 21 x 51 x 71 x 171 x 431 x 12,9791 = 664,135,430

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


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