Q: What are the prime factors of the number 25,525,568?

 A: 2, 17, 29, 809

Why are those the prime factors of the number 25,525,568?

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 25,525,568

25,525,568
Factor Arrows
212,762,784
Factor Arrows
26,381,392
Factor Arrows
23,190,696
Factor Arrows
21,595,348
Factor Arrows
2797,674
Factor Arrows
2398,837
Factor Arrows
1723,461
Factor Arrows
29809

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, 17, 29, 809

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 17 x 29 x 809 = 25,525,568

This can also be written as 26 x 171 x 291 x 8091 = 25,525,568

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


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