Q: What are the prime factors of the number 66,752?

 A: 2, 7, 149

Why are those the prime factors of the number 66,752?

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 66,752

66,752
Factor Arrows
233,376
Factor Arrows
216,688
Factor Arrows
28,344
Factor Arrows
24,172
Factor Arrows
22,086
Factor Arrows
21,043
Factor Arrows
7149

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, 149

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 7 x 149 = 66,752

This can also be written as 26 x 71 x 1491 = 66,752

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


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