Q: What are the prime factors of the number 121,325,544?

 A: 2, 3, 1685077

Why are those the prime factors of the number 121,325,544?

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 121,325,544

121,325,544
Factor Arrows
260,662,772
Factor Arrows
230,331,386
Factor Arrows
215,165,693
Factor Arrows
35,055,231
Factor Arrows
31,685,077

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, 3, 1685077

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 1,685,077 = 121,325,544

This can also be written as 23 x 32 x 1,685,0771 = 121,325,544

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


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