Q: What are the prime factors of the number 45,617,440?

 A: 2, 5, 11, 25919

Why are those the prime factors of the number 45,617,440?

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 45,617,440

45,617,440
Factor Arrows
222,808,720
Factor Arrows
211,404,360
Factor Arrows
25,702,180
Factor Arrows
22,851,090
Factor Arrows
21,425,545
Factor Arrows
5285,109
Factor Arrows
1125,919

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, 5, 11, 25919

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 11 x 25,919 = 45,617,440

This can also be written as 25 x 51 x 111 x 25,9191 = 45,617,440

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


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