Q: What are the prime factors of the number 12,341,248?

 A: 2, 23, 131

Why are those the prime factors of the number 12,341,248?

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 12,341,248

12,341,248
Factor Arrows
26,170,624
Factor Arrows
23,085,312
Factor Arrows
21,542,656
Factor Arrows
2771,328
Factor Arrows
2385,664
Factor Arrows
2192,832
Factor Arrows
296,416
Factor Arrows
248,208
Factor Arrows
224,104
Factor Arrows
212,052
Factor Arrows
26,026
Factor Arrows
23,013
Factor Arrows
23131

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, 23, 131

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 2 x 2 x 2 x 23 x 131 = 12,341,248

This can also be written as 212 x 231 x 1311 = 12,341,248

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


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