Q: What are the prime factors of the number 21,544,692?

 A: 2, 3, 13, 138107

Why are those the prime factors of the number 21,544,692?

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 21,544,692

21,544,692
Factor Arrows
210,772,346
Factor Arrows
25,386,173
Factor Arrows
31,795,391
Factor Arrows
13138,107

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, 13, 138107

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 13 x 138,107 = 21,544,692

This can also be written as 22 x 31 x 131 x 138,1071 = 21,544,692

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


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