Q: What are the prime factors of the number 45,746,208?

 A: 2, 3, 37, 53

Why are those the prime factors of the number 45,746,208?

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 45,746,208

45,746,208
Factor Arrows
222,873,104
Factor Arrows
211,436,552
Factor Arrows
25,718,276
Factor Arrows
22,859,138
Factor Arrows
21,429,569
Factor Arrows
3476,523
Factor Arrows
3158,841
Factor Arrows
352,947
Factor Arrows
317,649
Factor Arrows
35,883
Factor Arrows
31,961
Factor Arrows
3753

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, 37, 53

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 3 x 3 x 3 x 37 x 53 = 45,746,208

This can also be written as 25 x 36 x 371 x 531 = 45,746,208

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


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