Q: What are the prime factors of the number 121,201,264?

 A: 2, 449, 16871

Why are those the prime factors of the number 121,201,264?

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 121,201,264

121,201,264
Factor Arrows
260,600,632
Factor Arrows
230,300,316
Factor Arrows
215,150,158
Factor Arrows
27,575,079
Factor Arrows
44916,871

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, 449, 16871

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 449 x 16,871 = 121,201,264

This can also be written as 24 x 4491 x 16,8711 = 121,201,264

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


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