Q: What are the prime factors of the number 121,211,525?

 A: 5, 271, 17891

Why are those the prime factors of the number 121,211,525?

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 121,211,525

121,211,525
Factor Arrows
524,242,305
Factor Arrows
54,848,461
Factor Arrows
27117,891

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:

5, 271, 17891

We can check our work by multiplying all of the prime factors together: 5 x 5 x 271 x 17,891 = 121,211,525

This can also be written as 52 x 2711 x 17,8911 = 121,211,525

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


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