Q: What are the prime factors of the number 21,964,747?

 A: 7, 23, 227, 601

Why are those the prime factors of the number 21,964,747?

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 21,964,747

21,964,747
Factor Arrows
73,137,821
Factor Arrows
23136,427
Factor Arrows
227601

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, 23, 227, 601

We can check our work by multiplying all of the prime factors together: 7 x 23 x 227 x 601 = 21,964,747

This can also be written as 71 x 231 x 2271 x 6011 = 21,964,747

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


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