Q: What are the prime factors of the number 25,183,251?

 A: 3, 43, 109, 199

Why are those the prime factors of the number 25,183,251?

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 25,183,251

25,183,251
Factor Arrows
38,394,417
Factor Arrows
32,798,139
Factor Arrows
3932,713
Factor Arrows
4321,691
Factor Arrows
109199

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:

3, 43, 109, 199

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 43 x 109 x 199 = 25,183,251

This can also be written as 33 x 431 x 1091 x 1991 = 25,183,251

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


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