Q: What are the prime factors of the number 121,404,075?

 A: 3, 5, 13, 41, 3037

Why are those the prime factors of the number 121,404,075?

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 121,404,075

121,404,075
Factor Arrows
340,468,025
Factor Arrows
58,093,605
Factor Arrows
51,618,721
Factor Arrows
13124,517
Factor Arrows
413,037

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, 13, 41, 3037

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 13 x 41 x 3,037 = 121,404,075

This can also be written as 31 x 52 x 131 x 411 x 3,0371 = 121,404,075

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


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