Q: What are the prime factors of the number 121,544,445?

 A: 3, 5, 11, 37, 43, 463

Why are those the prime factors of the number 121,544,445?

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 121,544,445

121,544,445
Factor Arrows
340,514,815
Factor Arrows
58,102,963
Factor Arrows
11736,633
Factor Arrows
3719,909
Factor Arrows
43463

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:

3, 5, 11, 37, 43, 463

We can check our work by multiplying all of the prime factors together: 3 x 5 x 11 x 37 x 43 x 463 = 121,544,445

This can also be written as 31 x 51 x 111 x 371 x 431 x 4631 = 121,544,445

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


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