Q: What are the prime factors of the number 208,477,664?

 A: 2, 17, 22543

Why are those the prime factors of the number 208,477,664?

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 208,477,664

208,477,664
Factor Arrows
2104,238,832
Factor Arrows
252,119,416
Factor Arrows
226,059,708
Factor Arrows
213,029,854
Factor Arrows
26,514,927
Factor Arrows
17383,231
Factor Arrows
1722,543

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, 17, 22543

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 17 x 17 x 22,543 = 208,477,664

This can also be written as 25 x 172 x 22,5431 = 208,477,664

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


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