Q: What are the prime factors of the number 12,241,440?

 A: 2, 3, 5, 8501

Why are those the prime factors of the number 12,241,440?

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 12,241,440

12,241,440
Factor Arrows
26,120,720
Factor Arrows
23,060,360
Factor Arrows
21,530,180
Factor Arrows
2765,090
Factor Arrows
2382,545
Factor Arrows
3127,515
Factor Arrows
342,505
Factor Arrows
58,501

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, 8501

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 5 x 8,501 = 12,241,440

This can also be written as 25 x 32 x 51 x 8,5011 = 12,241,440

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


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