Q: What are the prime factors of the number 120,213,214?

 A: 2, 11, 151, 36187

Why are those the prime factors of the number 120,213,214?

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 120,213,214

120,213,214
Factor Arrows
260,106,607
Factor Arrows
115,464,237
Factor Arrows
15136,187

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, 11, 151, 36187

We can check our work by multiplying all of the prime factors together: 2 x 11 x 151 x 36,187 = 120,213,214

This can also be written as 21 x 111 x 1511 x 36,1871 = 120,213,214

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


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