Q: What are the prime factors of the number 24,870,240?

 A: 2, 3, 5, 19, 101

Why are those the prime factors of the number 24,870,240?

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 24,870,240

24,870,240
Factor Arrows
212,435,120
Factor Arrows
26,217,560
Factor Arrows
23,108,780
Factor Arrows
21,554,390
Factor Arrows
2777,195
Factor Arrows
3259,065
Factor Arrows
386,355
Factor Arrows
328,785
Factor Arrows
39,595
Factor Arrows
51,919
Factor Arrows
19101

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, 19, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 19 x 101 = 24,870,240

This can also be written as 25 x 34 x 51 x 191 x 1011 = 24,870,240

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


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