Q: What are the prime factors of the number 11,214,320?

 A: 2, 5, 13, 41, 263

Why are those the prime factors of the number 11,214,320?

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 11,214,320

11,214,320
Factor Arrows
25,607,160
Factor Arrows
22,803,580
Factor Arrows
21,401,790
Factor Arrows
2700,895
Factor Arrows
5140,179
Factor Arrows
1310,783
Factor Arrows
41263

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, 13, 41, 263

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 13 x 41 x 263 = 11,214,320

This can also be written as 24 x 51 x 131 x 411 x 2631 = 11,214,320

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


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