Q: What are the prime factors of the number 46,172,448?

 A: 2, 3, 7, 37, 619

Why are those the prime factors of the number 46,172,448?

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 46,172,448

46,172,448
Factor Arrows
223,086,224
Factor Arrows
211,543,112
Factor Arrows
25,771,556
Factor Arrows
22,885,778
Factor Arrows
21,442,889
Factor Arrows
3480,963
Factor Arrows
3160,321
Factor Arrows
722,903
Factor Arrows
37619

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, 7, 37, 619

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 7 x 37 x 619 = 46,172,448

This can also be written as 25 x 32 x 71 x 371 x 6191 = 46,172,448

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


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