Q: What are the prime factors of the number 123,566,352?

 A: 2, 3, 7, 13, 28289

Why are those the prime factors of the number 123,566,352?

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 123,566,352

123,566,352
Factor Arrows
261,783,176
Factor Arrows
230,891,588
Factor Arrows
215,445,794
Factor Arrows
27,722,897
Factor Arrows
32,574,299
Factor Arrows
7367,757
Factor Arrows
1328,289

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, 7, 13, 28289

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 13 x 28,289 = 123,566,352

This can also be written as 24 x 31 x 71 x 131 x 28,2891 = 123,566,352

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


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