Q: What are the prime factors of the number 146,816?

 A: 2, 31, 37

Why are those the prime factors of the number 146,816?

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 146,816

146,816
Factor Arrows
273,408
Factor Arrows
236,704
Factor Arrows
218,352
Factor Arrows
29,176
Factor Arrows
24,588
Factor Arrows
22,294
Factor Arrows
21,147
Factor Arrows
3137

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, 31, 37

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 31 x 37 = 146,816

This can also be written as 27 x 311 x 371 = 146,816

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


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