Q: What are the prime factors of the number 11,241,120?

 A: 2, 3, 5, 11, 2129

Why are those the prime factors of the number 11,241,120?

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 11,241,120

11,241,120
Factor Arrows
25,620,560
Factor Arrows
22,810,280
Factor Arrows
21,405,140
Factor Arrows
2702,570
Factor Arrows
2351,285
Factor Arrows
3117,095
Factor Arrows
523,419
Factor Arrows
112,129

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, 2129

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 5 x 11 x 2,129 = 11,241,120

This can also be written as 25 x 31 x 51 x 111 x 2,1291 = 11,241,120

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


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