Q: What are the prime factors of the number 96,640?

 A: 2, 5, 151

Why are those the prime factors of the number 96,640?

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 96,640

96,640
Factor Arrows
248,320
Factor Arrows
224,160
Factor Arrows
212,080
Factor Arrows
26,040
Factor Arrows
23,020
Factor Arrows
21,510
Factor Arrows
2755
Factor Arrows
5151

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, 151

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 5 x 151 = 96,640

This can also be written as 27 x 51 x 1511 = 96,640

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


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