Q: What are the prime factors of the number 149,960?

 A: 2, 5, 23, 163

Why are those the prime factors of the number 149,960?

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 149,960

149,960
Factor Arrows
274,980
Factor Arrows
237,490
Factor Arrows
218,745
Factor Arrows
53,749
Factor Arrows
23163

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, 5, 23, 163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 23 x 163 = 149,960

This can also be written as 23 x 51 x 231 x 1631 = 149,960

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


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