Q: What are the prime factors of the number 45,648?

 A: 2, 3, 317

Why are those the prime factors of the number 45,648?

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 45,648

45,648
Factor Arrows
222,824
Factor Arrows
211,412
Factor Arrows
25,706
Factor Arrows
22,853
Factor Arrows
3951
Factor Arrows
3317

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, 317

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 317 = 45,648

This can also be written as 24 x 32 x 3171 = 45,648

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


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