Greatest Common Divisor (GCD) of 104 and 129
The greatest common divisor (GCD) of 104 and 129 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 104 and 129?
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 | 104 ÷ 129 = 0 remainder 104 |
| 2 | 129 ÷ 104 = 1 remainder 25 |
| 3 | 104 ÷ 25 = 4 remainder 4 |
| 4 | 25 ÷ 4 = 6 remainder 1 |
| 5 | 4 ÷ 1 = 4 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 188 and 163 | 1 |
| 142 and 159 | 1 |
| 19 and 156 | 1 |
| 112 and 76 | 4 |
| 180 and 25 | 5 |