Q: What are the prime factors of the number 26,161,600?

 A: 2, 5, 83, 197

Why are those the prime factors of the number 26,161,600?

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 26,161,600

26,161,600
Factor Arrows
213,080,800
Factor Arrows
26,540,400
Factor Arrows
23,270,200
Factor Arrows
21,635,100
Factor Arrows
2817,550
Factor Arrows
2408,775
Factor Arrows
581,755
Factor Arrows
516,351
Factor Arrows
83197

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, 5, 83, 197

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 5 x 5 x 83 x 197 = 26,161,600

This can also be written as 26 x 52 x 831 x 1971 = 26,161,600

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


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