Q: What are the prime factors of the number 136,224?

 A: 2, 3, 11, 43

Why are those the prime factors of the number 136,224?

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 136,224

136,224
Factor Arrows
268,112
Factor Arrows
234,056
Factor Arrows
217,028
Factor Arrows
28,514
Factor Arrows
24,257
Factor Arrows
31,419
Factor Arrows
3473
Factor Arrows
1143

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, 11, 43

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 11 x 43 = 136,224

This can also be written as 25 x 32 x 111 x 431 = 136,224

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


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