Q: What are the prime factors of the number 25,556,100?

 A: 2, 3, 5, 17, 5011

Why are those the prime factors of the number 25,556,100?

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 25,556,100

25,556,100
Factor Arrows
212,778,050
Factor Arrows
26,389,025
Factor Arrows
32,129,675
Factor Arrows
5425,935
Factor Arrows
585,187
Factor Arrows
175,011

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, 5, 17, 5011

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 17 x 5,011 = 25,556,100

This can also be written as 22 x 31 x 52 x 171 x 5,0111 = 25,556,100

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


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