The greatest common factor (GCF) of 121 and 11 is 11.
To find the GCF, we look for the largest number that divides both 121 and 11 without leaving a remainder. First, let’s break down the numbers:
- 121 can be factored into its prime components: 11 x 11 or 112.
- 11 is already a prime number.
Now, we can see that the prime factorization of 121 includes a factor of 11. Since 11 is the only common factor between the two numbers, it is indeed the greatest common factor.
Thus, the greatest common factor of 121 and 11 is 11.