Q: What are the prime factors of the number 148,750?

 A: 2, 5, 7, 17

Why are those the prime factors of the number 148,750?

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 148,750

148,750
Factor Arrows
274,375
Factor Arrows
514,875
Factor Arrows
52,975
Factor Arrows
5595
Factor Arrows
5119
Factor Arrows
717

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, 7, 17

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 5 x 5 x 7 x 17 = 148,750

This can also be written as 21 x 54 x 71 x 171 = 148,750

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


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