Greatest Common Divisor (GCD) of 121 and 122
The greatest common divisor (GCD) of 121 and 122 is 1.
What is the Greatest Common Divisor (GCD)?
The GCD of two integers is the largest positive integer that divides both numbers without leaving a remainder. It is useful in simplifying fractions, finding common factors, and in number theory.
How to Calculate the GCD of 121 and 122?
We use the Euclidean algorithm, which involves the following steps:
- Divide the larger number by the smaller number.
- Replace the larger number with the smaller number and the smaller number with the remainder from the division.
- Repeat this process until the remainder is zero.
- The non-zero remainder just before zero is the GCD.
Step-by-Step Euclidean Algorithm
| Step | Calculation |
|---|---|
| 1 | 121 ÷ 122 = 0 remainder 121 |
| 2 | 122 ÷ 121 = 1 remainder 1 |
| 3 | 121 ÷ 1 = 121 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 141 and 102 | 3 |
| 124 and 140 | 4 |
| 89 and 64 | 1 |
| 154 and 176 | 22 |
| 87 and 17 | 1 |