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Greatest Common Divisor (GCD) of 47 and 125

The greatest common divisor (GCD) of 47 and 125 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 47 and 125?

We use the Euclidean algorithm, which involves the following steps:

  1. Divide the larger number by the smaller number.
  2. Replace the larger number with the smaller number and the smaller number with the remainder from the division.
  3. Repeat this process until the remainder is zero.
  4. The non-zero remainder just before zero is the GCD.

Step-by-Step Euclidean Algorithm

StepCalculation
1 47 ÷ 125 = 0 remainder 47
2 125 ÷ 47 = 2 remainder 31
3 47 ÷ 31 = 1 remainder 16
4 31 ÷ 16 = 1 remainder 15
5 16 ÷ 15 = 1 remainder 1
6 15 ÷ 1 = 15 remainder 0

Examples of GCD Calculations

NumbersGCD
89 and 1171
113 and 561
93 and 291
85 and 1791
110 and 182

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