Q: What are the prime factors of the number 11,462,720?

 A: 2, 5, 113, 317

Why are those the prime factors of the number 11,462,720?

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 11,462,720

11,462,720
Factor Arrows
25,731,360
Factor Arrows
22,865,680
Factor Arrows
21,432,840
Factor Arrows
2716,420
Factor Arrows
2358,210
Factor Arrows
2179,105
Factor Arrows
535,821
Factor Arrows
113317

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, 113, 317

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 113 x 317 = 11,462,720

This can also be written as 26 x 51 x 1131 x 3171 = 11,462,720

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


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