Q: What are the prime factors of the number 633,945?

 A: 3, 5, 13, 3251

Why are those the prime factors of the number 633,945?

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 633,945

633,945
Factor Arrows
3211,315
Factor Arrows
542,263
Factor Arrows
133,251

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, 3251

We can check our work by multiplying all of the prime factors together: 3 x 5 x 13 x 3,251 = 633,945

This can also be written as 31 x 51 x 131 x 3,2511 = 633,945

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


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