# Function gcd Calculate the greatest common divisor for two or more values or arrays. For matrices, the function is evaluated element wise. ## Syntax ```js math.gcd(a, b) math.gcd(a, b, c, ...) ``` ### Parameters Parameter | Type | Description --------- | ---- | ----------- `args` | ... number | BigNumber | Fraction | Array | Matrix | Two or more integer numbers ### Returns Type | Description ---- | ----------- number | BigNumber | Fraction | Array | Matrix | The greatest common divisor ## Examples ```js math.gcd(8, 12) // returns 4 math.gcd(-4, 6) // returns 2 math.gcd(25, 15, -10) // returns 5 math.gcd([8, -4], [12, 6]) // returns [4, 2] ``` ## See also [lcm](lcm.md), [xgcd](xgcd.md)