Q: What are the prime factors of the number 120,021,412?

 A: 2, 7, 353, 12143

Why are those the prime factors of the number 120,021,412?

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 120,021,412

120,021,412
Factor Arrows
260,010,706
Factor Arrows
230,005,353
Factor Arrows
74,286,479
Factor Arrows
35312,143

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, 353, 12143

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 353 x 12,143 = 120,021,412

This can also be written as 22 x 71 x 3531 x 12,1431 = 120,021,412

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


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