Q: What are the prime factors of the number 21,936,733?

 A: 7, 13, 23, 47, 223

Why are those the prime factors of the number 21,936,733?

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 21,936,733

21,936,733
Factor Arrows
73,133,819
Factor Arrows
13241,063
Factor Arrows
2310,481
Factor Arrows
47223

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:

7, 13, 23, 47, 223

We can check our work by multiplying all of the prime factors together: 7 x 13 x 23 x 47 x 223 = 21,936,733

This can also be written as 71 x 131 x 231 x 471 x 2231 = 21,936,733

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


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