Q: What are the prime factors of the number 45,020,416?

 A: 2, 7, 37, 97

Why are those the prime factors of the number 45,020,416?

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 45,020,416

45,020,416
Factor Arrows
222,510,208
Factor Arrows
211,255,104
Factor Arrows
25,627,552
Factor Arrows
22,813,776
Factor Arrows
21,406,888
Factor Arrows
2703,444
Factor Arrows
2351,722
Factor Arrows
2175,861
Factor Arrows
725,123
Factor Arrows
73,589
Factor Arrows
3797

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, 37, 97

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 7 x 7 x 37 x 97 = 45,020,416

This can also be written as 28 x 72 x 371 x 971 = 45,020,416

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


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