Q: What are the prime factors of the number 21,114,752?

 A: 2, 293, 563

Why are those the prime factors of the number 21,114,752?

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 21,114,752

21,114,752
Factor Arrows
210,557,376
Factor Arrows
25,278,688
Factor Arrows
22,639,344
Factor Arrows
21,319,672
Factor Arrows
2659,836
Factor Arrows
2329,918
Factor Arrows
2164,959
Factor Arrows
293563

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, 293, 563

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 293 x 563 = 21,114,752

This can also be written as 27 x 2931 x 5631 = 21,114,752

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


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