Q: What are the prime factors of the number 25,870,806?

 A: 2, 3, 13, 137, 269

Why are those the prime factors of the number 25,870,806?

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 25,870,806

25,870,806
Factor Arrows
212,935,403
Factor Arrows
34,311,801
Factor Arrows
31,437,267
Factor Arrows
3479,089
Factor Arrows
1336,853
Factor Arrows
137269

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, 13, 137, 269

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 13 x 137 x 269 = 25,870,806

This can also be written as 21 x 33 x 131 x 1371 x 2691 = 25,870,806

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


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