Q: What are the prime factors of the number 57,423,168?

 A: 2, 3, 11, 19, 53

Why are those the prime factors of the number 57,423,168?

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 57,423,168

57,423,168
Factor Arrows
228,711,584
Factor Arrows
214,355,792
Factor Arrows
27,177,896
Factor Arrows
23,588,948
Factor Arrows
21,794,474
Factor Arrows
2897,237
Factor Arrows
3299,079
Factor Arrows
399,693
Factor Arrows
333,231
Factor Arrows
311,077
Factor Arrows
111,007
Factor Arrows
1953

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, 11, 19, 53

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 3 x 3 x 3 x 3 x 11 x 19 x 53 = 57,423,168

This can also be written as 26 x 34 x 111 x 191 x 531 = 57,423,168

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


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