Q: What are the prime factors of the number 11,817,472?

 A: 2, 23081

Why are those the prime factors of the number 11,817,472?

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 11,817,472

11,817,472
Factor Arrows
25,908,736
Factor Arrows
22,954,368
Factor Arrows
21,477,184
Factor Arrows
2738,592
Factor Arrows
2369,296
Factor Arrows
2184,648
Factor Arrows
292,324
Factor Arrows
246,162
Factor Arrows
223,081

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, 23081

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 23,081 = 11,817,472

This can also be written as 29 x 23,0811 = 11,817,472

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


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