Q: What are the prime factors of the number 45,164,768?

 A: 2, 11, 31, 4139

Why are those the prime factors of the number 45,164,768?

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 45,164,768

45,164,768
Factor Arrows
222,582,384
Factor Arrows
211,291,192
Factor Arrows
25,645,596
Factor Arrows
22,822,798
Factor Arrows
21,411,399
Factor Arrows
11128,309
Factor Arrows
314,139

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, 11, 31, 4139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 31 x 4,139 = 45,164,768

This can also be written as 25 x 111 x 311 x 4,1391 = 45,164,768

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


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