Q: What are the prime factors of the number 22,641,729?

 A: 3, 11, 23, 1297

Why are those the prime factors of the number 22,641,729?

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 22,641,729

22,641,729
Factor Arrows
37,547,243
Factor Arrows
11686,113
Factor Arrows
2329,831
Factor Arrows
231,297

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:

3, 11, 23, 1297

We can check our work by multiplying all of the prime factors together: 3 x 11 x 23 x 23 x 1,297 = 22,641,729

This can also be written as 31 x 111 x 232 x 1,2971 = 22,641,729

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


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