Q: What are the prime factors of the number 121,150,664?

 A: 2, 15143833

Why are those the prime factors of the number 121,150,664?

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 121,150,664

121,150,664
Factor Arrows
260,575,332
Factor Arrows
230,287,666
Factor Arrows
215,143,833

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, 15143833

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 15,143,833 = 121,150,664

This can also be written as 23 x 15,143,8331 = 121,150,664

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


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