Q: What are the prime factors of the number 25,522,816?

 A: 2, 11, 18127

Why are those the prime factors of the number 25,522,816?

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 25,522,816

25,522,816
Factor Arrows
212,761,408
Factor Arrows
26,380,704
Factor Arrows
23,190,352
Factor Arrows
21,595,176
Factor Arrows
2797,588
Factor Arrows
2398,794
Factor Arrows
2199,397
Factor Arrows
1118,127

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, 11, 18127

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 11 x 18,127 = 25,522,816

This can also be written as 27 x 111 x 18,1271 = 25,522,816

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


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