Q: What are the prime factors of the number 635,505?

 A: 3, 5, 13, 3259

Why are those the prime factors of the number 635,505?

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 635,505

635,505
Factor Arrows
3211,835
Factor Arrows
542,367
Factor Arrows
133,259

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, 13, 3259

We can check our work by multiplying all of the prime factors together: 3 x 5 x 13 x 3,259 = 635,505

This can also be written as 31 x 51 x 131 x 3,2591 = 635,505

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


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