Q: What are the prime factors of the number 26,105,440?

 A: 2, 5, 167, 977

Why are those the prime factors of the number 26,105,440?

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 26,105,440

26,105,440
Factor Arrows
213,052,720
Factor Arrows
26,526,360
Factor Arrows
23,263,180
Factor Arrows
21,631,590
Factor Arrows
2815,795
Factor Arrows
5163,159
Factor Arrows
167977

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, 167, 977

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 167 x 977 = 26,105,440

This can also be written as 25 x 51 x 1671 x 9771 = 26,105,440

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


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