Q: What are the prime factors of the number 673,623?

 A: 3, 61, 409

Why are those the prime factors of the number 673,623?

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 673,623

673,623
Factor Arrows
3224,541
Factor Arrows
374,847
Factor Arrows
324,949
Factor Arrows
61409

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, 61, 409

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 61 x 409 = 673,623

This can also be written as 33 x 611 x 4091 = 673,623

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


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