Q: What are the prime factors of the number 11,361,680?

 A: 2, 5, 11, 12911

Why are those the prime factors of the number 11,361,680?

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 11,361,680

11,361,680
Factor Arrows
25,680,840
Factor Arrows
22,840,420
Factor Arrows
21,420,210
Factor Arrows
2710,105
Factor Arrows
5142,021
Factor Arrows
1112,911

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, 11, 12911

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 11 x 12,911 = 11,361,680

This can also be written as 24 x 51 x 111 x 12,9111 = 11,361,680

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


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