Q: What are the prime factors of the number 25,014,906?

 A: 2, 3, 7, 19, 43

Why are those the prime factors of the number 25,014,906?

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 25,014,906

25,014,906
Factor Arrows
212,507,453
Factor Arrows
34,169,151
Factor Arrows
31,389,717
Factor Arrows
3463,239
Factor Arrows
3154,413
Factor Arrows
351,471
Factor Arrows
317,157
Factor Arrows
35,719
Factor Arrows
7817
Factor Arrows
1943

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, 7, 19, 43

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 7 x 19 x 43 = 25,014,906

This can also be written as 21 x 37 x 71 x 191 x 431 = 25,014,906

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


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