Q: What are the prime factors of the number 25,700,544?

 A: 2, 3, 107, 139

Why are those the prime factors of the number 25,700,544?

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 25,700,544

25,700,544
Factor Arrows
212,850,272
Factor Arrows
26,425,136
Factor Arrows
23,212,568
Factor Arrows
21,606,284
Factor Arrows
2803,142
Factor Arrows
2401,571
Factor Arrows
3133,857
Factor Arrows
344,619
Factor Arrows
314,873
Factor Arrows
107139

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, 107, 139

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 3 x 3 x 3 x 107 x 139 = 25,700,544

This can also be written as 26 x 33 x 1071 x 1391 = 25,700,544

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


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