Q: What are the prime factors of the number 25,212,416?

 A: 2, 23, 2141

Why are those the prime factors of the number 25,212,416?

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 25,212,416

25,212,416
Factor Arrows
212,606,208
Factor Arrows
26,303,104
Factor Arrows
23,151,552
Factor Arrows
21,575,776
Factor Arrows
2787,888
Factor Arrows
2393,944
Factor Arrows
2196,972
Factor Arrows
298,486
Factor Arrows
249,243
Factor Arrows
232,141

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, 23, 2141

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 2 x 2 x 2 x 23 x 2,141 = 25,212,416

This can also be written as 29 x 231 x 2,1411 = 25,212,416

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


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