mathjs/docs/reference/functions/lcm.md

Function lcm

Calculate the least common multiple for two or more values or arrays.

lcm is defined as:

lcm(a, b) = abs(a * b) / gcd(a, b)

For matrices, the function is evaluated element wise.

Syntax

math.lcm(a, b)
math.lcm(a, b, c, ...)

Parameters

Parameter	Type	Description
args	... number | BigNumber | Array | Matrix	Two or more integer numbers

Returns

Type	Description
number | BigNumber | Array | Matrix	The least common multiple

Examples

math.lcm(4, 6);               // returns 12
math.lcm(6, 21);              // returns 42
math.lcm(6, 21, 5);           // returns 210

math.lcm([4, 6], [6, 21]);    // returns [12, 42]

See also

gcd, xgcd