Q: What are the prime factors of the number 123,240,224?

 A: 2, 233, 16529

Why are those the prime factors of the number 123,240,224?

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 123,240,224

123,240,224
Factor Arrows
261,620,112
Factor Arrows
230,810,056
Factor Arrows
215,405,028
Factor Arrows
27,702,514
Factor Arrows
23,851,257
Factor Arrows
23316,529

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, 233, 16529

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 233 x 16,529 = 123,240,224

This can also be written as 25 x 2331 x 16,5291 = 123,240,224

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


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