Greatest Common Divisor (GCD) of 61 and 95
The greatest common divisor (GCD) of 61 and 95 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 61 and 95?
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 | 61 ÷ 95 = 0 remainder 61 |
| 2 | 95 ÷ 61 = 1 remainder 34 |
| 3 | 61 ÷ 34 = 1 remainder 27 |
| 4 | 34 ÷ 27 = 1 remainder 7 |
| 5 | 27 ÷ 7 = 3 remainder 6 |
| 6 | 7 ÷ 6 = 1 remainder 1 |
| 7 | 6 ÷ 1 = 6 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 56 and 75 | 1 |
| 197 and 180 | 1 |
| 45 and 166 | 1 |
| 153 and 13 | 1 |
| 134 and 42 | 2 |