Q: What are the prime factors of the number 4,158,112?

 A: 2, 7, 19, 977

Why are those the prime factors of the number 4,158,112?

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 4,158,112

4,158,112
Factor Arrows
22,079,056
Factor Arrows
21,039,528
Factor Arrows
2519,764
Factor Arrows
2259,882
Factor Arrows
2129,941
Factor Arrows
718,563
Factor Arrows
19977

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, 19, 977

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 19 x 977 = 4,158,112

This can also be written as 25 x 71 x 191 x 9771 = 4,158,112

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


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