Q: What are the prime factors of the number 192,240?

 A: 2, 3, 5, 89

Why are those the prime factors of the number 192,240?

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 192,240

192,240
Factor Arrows
296,120
Factor Arrows
248,060
Factor Arrows
224,030
Factor Arrows
212,015
Factor Arrows
34,005
Factor Arrows
31,335
Factor Arrows
3445
Factor Arrows
589

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, 3, 5, 89

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 89 = 192,240

This can also be written as 24 x 33 x 51 x 891 = 192,240

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


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