Q: What are the prime factors of the number 24,701,220?

 A: 2, 3, 5, 149, 307

Why are those the prime factors of the number 24,701,220?

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 24,701,220

24,701,220
Factor Arrows
212,350,610
Factor Arrows
26,175,305
Factor Arrows
32,058,435
Factor Arrows
3686,145
Factor Arrows
3228,715
Factor Arrows
545,743
Factor Arrows
149307

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, 149, 307

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 149 x 307 = 24,701,220

This can also be written as 22 x 33 x 51 x 1491 x 3071 = 24,701,220

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


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