Q: What are the prime factors of the number 641,304?

 A: 2, 3, 2969

Why are those the prime factors of the number 641,304?

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 641,304

641,304
Factor Arrows
2320,652
Factor Arrows
2160,326
Factor Arrows
280,163
Factor Arrows
326,721
Factor Arrows
38,907
Factor Arrows
32,969

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, 3, 2969

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 2,969 = 641,304

This can also be written as 23 x 33 x 2,9691 = 641,304

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


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