Q: What are the prime factors of the number 120,121,712?

 A: 2, 29, 79, 113

Why are those the prime factors of the number 120,121,712?

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 120,121,712

120,121,712
Factor Arrows
260,060,856
Factor Arrows
230,030,428
Factor Arrows
215,015,214
Factor Arrows
27,507,607
Factor Arrows
29258,883
Factor Arrows
298,927
Factor Arrows
79113

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, 29, 79, 113

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 29 x 29 x 79 x 113 = 120,121,712

This can also be written as 24 x 292 x 791 x 1131 = 120,121,712

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


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