Q: What are the prime factors of the number 25,430,232?

 A: 2, 3, 17, 157, 397

Why are those the prime factors of the number 25,430,232?

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 25,430,232

25,430,232
Factor Arrows
212,715,116
Factor Arrows
26,357,558
Factor Arrows
23,178,779
Factor Arrows
31,059,593
Factor Arrows
1762,329
Factor Arrows
157397

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, 17, 157, 397

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 17 x 157 x 397 = 25,430,232

This can also be written as 23 x 31 x 171 x 1571 x 3971 = 25,430,232

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


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