Greatest Common Divisor (GCD) of 111 and 173
The greatest common divisor (GCD) of 111 and 173 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 111 and 173?
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 | 111 ÷ 173 = 0 remainder 111 |
| 2 | 173 ÷ 111 = 1 remainder 62 |
| 3 | 111 ÷ 62 = 1 remainder 49 |
| 4 | 62 ÷ 49 = 1 remainder 13 |
| 5 | 49 ÷ 13 = 3 remainder 10 |
| 6 | 13 ÷ 10 = 1 remainder 3 |
| 7 | 10 ÷ 3 = 3 remainder 1 |
| 8 | 3 ÷ 1 = 3 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 106 and 151 | 1 |
| 179 and 44 | 1 |
| 19 and 117 | 1 |
| 129 and 56 | 1 |
| 35 and 133 | 7 |