Q: What are the prime factors of the number 645,096?

 A: 2, 3, 26879

Why are those the prime factors of the number 645,096?

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 645,096

645,096
Factor Arrows
2322,548
Factor Arrows
2161,274
Factor Arrows
280,637
Factor Arrows
326,879

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, 26879

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 26,879 = 645,096

This can also be written as 23 x 31 x 26,8791 = 645,096

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


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