Q: What are the prime factors of the number 12,178,496?

 A: 2, 11, 17299

Why are those the prime factors of the number 12,178,496?

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 12,178,496

12,178,496
Factor Arrows
26,089,248
Factor Arrows
23,044,624
Factor Arrows
21,522,312
Factor Arrows
2761,156
Factor Arrows
2380,578
Factor Arrows
2190,289
Factor Arrows
1117,299

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, 11, 17299

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 11 x 17,299 = 12,178,496

This can also be written as 26 x 111 x 17,2991 = 12,178,496

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


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