Q: What are the prime factors of the number 21,773,952?

 A: 2, 3, 41, 461

Why are those the prime factors of the number 21,773,952?

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 21,773,952

21,773,952
Factor Arrows
210,886,976
Factor Arrows
25,443,488
Factor Arrows
22,721,744
Factor Arrows
21,360,872
Factor Arrows
2680,436
Factor Arrows
2340,218
Factor Arrows
2170,109
Factor Arrows
356,703
Factor Arrows
318,901
Factor Arrows
41461

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, 41, 461

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 41 x 461 = 21,773,952

This can also be written as 27 x 32 x 411 x 4611 = 21,773,952

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


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