Q: What are the prime factors of the number 45,001,440?

 A: 2, 3, 5, 11, 947

Why are those the prime factors of the number 45,001,440?

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 45,001,440

45,001,440
Factor Arrows
222,500,720
Factor Arrows
211,250,360
Factor Arrows
25,625,180
Factor Arrows
22,812,590
Factor Arrows
21,406,295
Factor Arrows
3468,765
Factor Arrows
3156,255
Factor Arrows
352,085
Factor Arrows
510,417
Factor Arrows
11947

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, 5, 11, 947

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 11 x 947 = 45,001,440

This can also be written as 25 x 33 x 51 x 111 x 9471 = 45,001,440

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


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