Q: What are the prime factors of the number 126,416?

 A: 2, 7901

Why are those the prime factors of the number 126,416?

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 126,416

126,416
Factor Arrows
263,208
Factor Arrows
231,604
Factor Arrows
215,802
Factor Arrows
27,901

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, 7901

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7,901 = 126,416

This can also be written as 24 x 7,9011 = 126,416

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


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