Q: What are the prime factors of the number 24,221,120?

 A: 2, 5, 7, 11, 983

Why are those the prime factors of the number 24,221,120?

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 24,221,120

24,221,120
Factor Arrows
212,110,560
Factor Arrows
26,055,280
Factor Arrows
23,027,640
Factor Arrows
21,513,820
Factor Arrows
2756,910
Factor Arrows
2378,455
Factor Arrows
575,691
Factor Arrows
710,813
Factor Arrows
11983

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, 5, 7, 11, 983

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 5 x 7 x 11 x 983 = 24,221,120

This can also be written as 26 x 51 x 71 x 111 x 9831 = 24,221,120

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


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