Q: What are the prime factors of the number 25,071,431?

 A: 7, 11, 19, 17137

Why are those the prime factors of the number 25,071,431?

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 25,071,431

25,071,431
Factor Arrows
73,581,633
Factor Arrows
11325,603
Factor Arrows
1917,137

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:

7, 11, 19, 17137

We can check our work by multiplying all of the prime factors together: 7 x 11 x 19 x 17,137 = 25,071,431

This can also be written as 71 x 111 x 191 x 17,1371 = 25,071,431

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


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