Q: What are the prime factors of the number 121,018,964?

 A: 2, 11, 2750431

Why are those the prime factors of the number 121,018,964?

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 121,018,964

121,018,964
Factor Arrows
260,509,482
Factor Arrows
230,254,741
Factor Arrows
112,750,431

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, 11, 2750431

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 2,750,431 = 121,018,964

This can also be written as 22 x 111 x 2,750,4311 = 121,018,964

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


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