Greatest Common Divisor (GCD) of 200 and 124
The greatest common divisor (GCD) of 200 and 124 is 4.
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 200 and 124?
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 | 200 ÷ 124 = 1 remainder 76 |
| 2 | 124 ÷ 76 = 1 remainder 48 |
| 3 | 76 ÷ 48 = 1 remainder 28 |
| 4 | 48 ÷ 28 = 1 remainder 20 |
| 5 | 28 ÷ 20 = 1 remainder 8 |
| 6 | 20 ÷ 8 = 2 remainder 4 |
| 7 | 8 ÷ 4 = 2 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 168 and 12 | 12 |
| 144 and 172 | 4 |
| 179 and 63 | 1 |
| 141 and 56 | 1 |
| 126 and 21 | 21 |