Q: What are the prime factors of the number 212,420,600?

 A: 2, 5, 7, 151729

Why are those the prime factors of the number 212,420,600?

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 212,420,600

212,420,600
Factor Arrows
2106,210,300
Factor Arrows
253,105,150
Factor Arrows
226,552,575
Factor Arrows
55,310,515
Factor Arrows
51,062,103
Factor Arrows
7151,729

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, 5, 7, 151729

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 7 x 151,729 = 212,420,600

This can also be written as 23 x 52 x 71 x 151,7291 = 212,420,600

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


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