Q: What are the prime factors of the number 25,216,020?

 A: 2, 3, 5, 31, 4519

Why are those the prime factors of the number 25,216,020?

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 25,216,020

25,216,020
Factor Arrows
212,608,010
Factor Arrows
26,304,005
Factor Arrows
32,101,335
Factor Arrows
3700,445
Factor Arrows
5140,089
Factor Arrows
314,519

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, 5, 31, 4519

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 31 x 4,519 = 25,216,020

This can also be written as 22 x 32 x 51 x 311 x 4,5191 = 25,216,020

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


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