Q: What are the prime factors of the number 211,263,616?

 A: 2, 647, 2551

Why are those the prime factors of the number 211,263,616?

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 211,263,616

211,263,616
Factor Arrows
2105,631,808
Factor Arrows
252,815,904
Factor Arrows
226,407,952
Factor Arrows
213,203,976
Factor Arrows
26,601,988
Factor Arrows
23,300,994
Factor Arrows
21,650,497
Factor Arrows
6472,551

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, 647, 2551

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 647 x 2,551 = 211,263,616

This can also be written as 27 x 6471 x 2,5511 = 211,263,616

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


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