Q: What are the prime factors of the number 81,230,212?

 A: 2, 7, 359, 8081

Why are those the prime factors of the number 81,230,212?

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 81,230,212

81,230,212
Factor Arrows
240,615,106
Factor Arrows
220,307,553
Factor Arrows
72,901,079
Factor Arrows
3598,081

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, 7, 359, 8081

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 359 x 8,081 = 81,230,212

This can also be written as 22 x 71 x 3591 x 8,0811 = 81,230,212

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


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