Q: What are the prime factors of the number 212,321,668?

 A: 2, 13, 73, 55933

Why are those the prime factors of the number 212,321,668?

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 212,321,668

212,321,668
Factor Arrows
2106,160,834
Factor Arrows
253,080,417
Factor Arrows
134,083,109
Factor Arrows
7355,933

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, 13, 73, 55933

We can check our work by multiplying all of the prime factors together: 2 x 2 x 13 x 73 x 55,933 = 212,321,668

This can also be written as 22 x 131 x 731 x 55,9331 = 212,321,668

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


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