Q: What are the prime factors of the number 11,122,320?

 A: 2, 3, 5, 11, 383

Why are those the prime factors of the number 11,122,320?

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 11,122,320

11,122,320
Factor Arrows
25,561,160
Factor Arrows
22,780,580
Factor Arrows
21,390,290
Factor Arrows
2695,145
Factor Arrows
3231,715
Factor Arrows
546,343
Factor Arrows
114,213
Factor Arrows
11383

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, 11, 383

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 11 x 11 x 383 = 11,122,320

This can also be written as 24 x 31 x 51 x 112 x 3831 = 11,122,320

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


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