Greatest Common Divisor (GCD) of 154 and 98
The greatest common divisor (GCD) of 154 and 98 is 14.
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 154 and 98?
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 | 154 ÷ 98 = 1 remainder 56 |
| 2 | 98 ÷ 56 = 1 remainder 42 |
| 3 | 56 ÷ 42 = 1 remainder 14 |
| 4 | 42 ÷ 14 = 3 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 155 and 147 | 1 |
| 180 and 180 | 180 |
| 33 and 69 | 3 |
| 138 and 19 | 1 |
| 168 and 160 | 8 |