Greatest Common Divisor (GCD) of 131 and 199
The greatest common divisor (GCD) of 131 and 199 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 131 and 199?
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 | 131 ÷ 199 = 0 remainder 131 |
| 2 | 199 ÷ 131 = 1 remainder 68 |
| 3 | 131 ÷ 68 = 1 remainder 63 |
| 4 | 68 ÷ 63 = 1 remainder 5 |
| 5 | 63 ÷ 5 = 12 remainder 3 |
| 6 | 5 ÷ 3 = 1 remainder 2 |
| 7 | 3 ÷ 2 = 1 remainder 1 |
| 8 | 2 ÷ 1 = 2 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 53 and 26 | 1 |
| 180 and 32 | 4 |
| 174 and 180 | 6 |
| 145 and 155 | 5 |
| 111 and 151 | 1 |