Q: What are the prime factors of the number 11,770,272?

 A: 2, 3, 19, 239

Why are those the prime factors of the number 11,770,272?

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 11,770,272

11,770,272
Factor Arrows
25,885,136
Factor Arrows
22,942,568
Factor Arrows
21,471,284
Factor Arrows
2735,642
Factor Arrows
2367,821
Factor Arrows
3122,607
Factor Arrows
340,869
Factor Arrows
313,623
Factor Arrows
34,541
Factor Arrows
19239

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, 19, 239

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 3 x 3 x 3 x 19 x 239 = 11,770,272

This can also be written as 25 x 34 x 191 x 2391 = 11,770,272

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


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