Q: What are the prime factors of the number 212,131,008?

 A: 2, 3, 122761

Why are those the prime factors of the number 212,131,008?

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 212,131,008

212,131,008
Factor Arrows
2106,065,504
Factor Arrows
253,032,752
Factor Arrows
226,516,376
Factor Arrows
213,258,188
Factor Arrows
26,629,094
Factor Arrows
23,314,547
Factor Arrows
31,104,849
Factor Arrows
3368,283
Factor Arrows
3122,761

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, 122761

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 3 x 3 x 3 x 122,761 = 212,131,008

This can also be written as 26 x 33 x 122,7611 = 212,131,008

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


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