Q: What are the prime factors of the number 11,847,456?

 A: 2, 3, 31, 1327

Why are those the prime factors of the number 11,847,456?

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 11,847,456

11,847,456
Factor Arrows
25,923,728
Factor Arrows
22,961,864
Factor Arrows
21,480,932
Factor Arrows
2740,466
Factor Arrows
2370,233
Factor Arrows
3123,411
Factor Arrows
341,137
Factor Arrows
311,327

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, 31, 1327

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 31 x 1,327 = 11,847,456

This can also be written as 25 x 32 x 311 x 1,3271 = 11,847,456

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


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