Q: What are the prime factors of the number 212,456,040?

 A: 2, 3, 5, 103, 17189

Why are those the prime factors of the number 212,456,040?

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 212,456,040

212,456,040
Factor Arrows
2106,228,020
Factor Arrows
253,114,010
Factor Arrows
226,557,005
Factor Arrows
38,852,335
Factor Arrows
51,770,467
Factor Arrows
10317,189

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, 5, 103, 17189

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 103 x 17,189 = 212,456,040

This can also be written as 23 x 31 x 51 x 1031 x 17,1891 = 212,456,040

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


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