Q: What are the prime factors of the number 21,941,631?

 A: 3, 83, 9791

Why are those the prime factors of the number 21,941,631?

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 21,941,631

21,941,631
Factor Arrows
37,313,877
Factor Arrows
32,437,959
Factor Arrows
3812,653
Factor Arrows
839,791

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, 83, 9791

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 83 x 9,791 = 21,941,631

This can also be written as 33 x 831 x 9,7911 = 21,941,631

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


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