Q: What are the prime factors of the number 57,036,672?

 A: 2, 3, 7, 11, 643

Why are those the prime factors of the number 57,036,672?

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 57,036,672

57,036,672
Factor Arrows
228,518,336
Factor Arrows
214,259,168
Factor Arrows
27,129,584
Factor Arrows
23,564,792
Factor Arrows
21,782,396
Factor Arrows
2891,198
Factor Arrows
2445,599
Factor Arrows
3148,533
Factor Arrows
349,511
Factor Arrows
77,073
Factor Arrows
11643

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, 11, 643

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 3 x 3 x 7 x 11 x 643 = 57,036,672

This can also be written as 27 x 32 x 71 x 111 x 6431 = 57,036,672

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


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