Q: What are the prime factors of the number 12,644,899?

 A: 19, 29, 53, 433

Why are those the prime factors of the number 12,644,899?

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 12,644,899

12,644,899
Factor Arrows
19665,521
Factor Arrows
2922,949
Factor Arrows
53433

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:

19, 29, 53, 433

We can check our work by multiplying all of the prime factors together: 19 x 29 x 53 x 433 = 12,644,899

This can also be written as 191 x 291 x 531 x 4331 = 12,644,899

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


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