Q: What are the prime factors of the number 121,826,556?

 A: 2, 3, 17, 19, 10477

Why are those the prime factors of the number 121,826,556?

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 121,826,556

121,826,556
Factor Arrows
260,913,278
Factor Arrows
230,456,639
Factor Arrows
310,152,213
Factor Arrows
33,384,071
Factor Arrows
17199,063
Factor Arrows
1910,477

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, 17, 19, 10477

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 17 x 19 x 10,477 = 121,826,556

This can also be written as 22 x 32 x 171 x 191 x 10,4771 = 121,826,556

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


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