Q: What are the prime factors of the number 45,412,320?

 A: 2, 3, 5, 37, 2557

Why are those the prime factors of the number 45,412,320?

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 45,412,320

45,412,320
Factor Arrows
222,706,160
Factor Arrows
211,353,080
Factor Arrows
25,676,540
Factor Arrows
22,838,270
Factor Arrows
21,419,135
Factor Arrows
3473,045
Factor Arrows
594,609
Factor Arrows
372,557

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, 37, 2557

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 5 x 37 x 2,557 = 45,412,320

This can also be written as 25 x 31 x 51 x 371 x 2,5571 = 45,412,320

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


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