Q: What are the prime factors of the number 11,848,320?

 A: 2, 3, 5, 11, 17

Why are those the prime factors of the number 11,848,320?

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 11,848,320

11,848,320
Factor Arrows
25,924,160
Factor Arrows
22,962,080
Factor Arrows
21,481,040
Factor Arrows
2740,520
Factor Arrows
2370,260
Factor Arrows
2185,130
Factor Arrows
292,565
Factor Arrows
330,855
Factor Arrows
310,285
Factor Arrows
52,057
Factor Arrows
11187
Factor Arrows
1117

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, 17

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 3 x 3 x 5 x 11 x 11 x 17 = 11,848,320

This can also be written as 27 x 32 x 51 x 112 x 171 = 11,848,320

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


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