Q: What are the prime factors of the number 212,165,115?

 A: 3, 5, 19, 39181

Why are those the prime factors of the number 212,165,115?

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 212,165,115

212,165,115
Factor Arrows
370,721,705
Factor Arrows
514,144,341
Factor Arrows
19744,439
Factor Arrows
1939,181

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:

3, 5, 19, 39181

We can check our work by multiplying all of the prime factors together: 3 x 5 x 19 x 19 x 39,181 = 212,165,115

This can also be written as 31 x 51 x 192 x 39,1811 = 212,165,115

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


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