Greatest Common Divisor (GCD) of 132 and 87
The greatest common divisor (GCD) of 132 and 87 is 3.
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 132 and 87?
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 | 132 ÷ 87 = 1 remainder 45 |
| 2 | 87 ÷ 45 = 1 remainder 42 |
| 3 | 45 ÷ 42 = 1 remainder 3 |
| 4 | 42 ÷ 3 = 14 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 175 and 26 | 1 |
| 41 and 84 | 1 |
| 188 and 193 | 1 |
| 151 and 15 | 1 |
| 83 and 22 | 1 |