Q: What are the prime factors of the number 45,022,208?

 A: 2, 7, 11, 571

Why are those the prime factors of the number 45,022,208?

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 45,022,208

45,022,208
Factor Arrows
222,511,104
Factor Arrows
211,255,552
Factor Arrows
25,627,776
Factor Arrows
22,813,888
Factor Arrows
21,406,944
Factor Arrows
2703,472
Factor Arrows
2351,736
Factor Arrows
2175,868
Factor Arrows
287,934
Factor Arrows
243,967
Factor Arrows
76,281
Factor Arrows
11571

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, 7, 11, 571

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 11 x 571 = 45,022,208

This can also be written as 210 x 71 x 111 x 5711 = 45,022,208

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


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