Python math.gcd() – Greatest Common Divisor

Python math.gcd()

math.gcd(*integers) function returns the Greatest Common Divisor (GCD) of the integers passed as arguments.

Syntax

The syntax to call gcd() function is

math.gcd(*integers)

where

Parameter	Required	Description
*integers	No	None, one or multiple integer values.

If no integer value is passed as argument to gcd(), then the return value is 0.

If only one integer is passed to gcd(), then then same value is returned as GCD.

If any non-integral value is passed as argument to gcd(), then the function raises TypeError.

Examples

1. Find GCD of two integers

In the following program, we take two integers: 10 and 25, and find their GCD using math.gcd() function.

Python Program

import math

result = math.gcd(10, 25)
print('gcd() :', result)

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Output

gcd() : 5

2. Find GCD of a single integer value

In the following program, we take only one integer: 10, and find its GCD using math.gcd() function.

Python Program

import math

result = math.gcd(25)
print('gcd() :', result)

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Output

gcd() : 25

3. Find GCD of float values

In the following program, we take two float values: 25.5 and 2.6, and find their GCD using math.gcd() function. gcd() throws TypeError if the arguments are of type float.

Python Program

import math

result = math.gcd(25.5, 2.6)
print('gcd() :', result)

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Output

TypeError: 'float' object cannot be interpreted as an integer

Summary

In this Python Math tutorial, we learned the syntax of, and examples for math.gcd() function.