Q: What are the prime factors of the number 664,235,432?

 A: 2, 7, 53, 163, 1373

Why are those the prime factors of the number 664,235,432?

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 664,235,432

664,235,432
Factor Arrows
2332,117,716
Factor Arrows
2166,058,858
Factor Arrows
283,029,429
Factor Arrows
711,861,347
Factor Arrows
53223,799
Factor Arrows
1631,373

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, 7, 53, 163, 1373

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 53 x 163 x 1,373 = 664,235,432

This can also be written as 23 x 71 x 531 x 1631 x 1,3731 = 664,235,432

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


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