Q: What are the prime factors of the number 12,705,024?

 A: 2, 3, 71, 233

Why are those the prime factors of the number 12,705,024?

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 12,705,024

12,705,024
Factor Arrows
26,352,512
Factor Arrows
23,176,256
Factor Arrows
21,588,128
Factor Arrows
2794,064
Factor Arrows
2397,032
Factor Arrows
2198,516
Factor Arrows
299,258
Factor Arrows
249,629
Factor Arrows
316,543
Factor Arrows
71233

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, 71, 233

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 3 x 71 x 233 = 12,705,024

This can also be written as 28 x 31 x 711 x 2331 = 12,705,024

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


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