Greatest Common Divisor (GCD) of 34 and 70
The greatest common divisor (GCD) of 34 and 70 is 2.
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 34 and 70?
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 | 34 ÷ 70 = 0 remainder 34 |
| 2 | 70 ÷ 34 = 2 remainder 2 |
| 3 | 34 ÷ 2 = 17 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 149 and 166 | 1 |
| 120 and 172 | 4 |
| 152 and 46 | 2 |
| 130 and 82 | 2 |
| 181 and 141 | 1 |