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Compute the least common multiple (lcm).

The least common multiple (lcm) of two non-zero integers a and b is the smallest positive integer that is divisible by both a and b. The lcm is also known as the lowest common multiple or smallest common multiple and finds common use in calculating the lowest common denominator (lcd).


npm install @stdlib/math-base-special-lcm


var lcm = require( '@stdlib/math-base-special-lcm' );

lcm( a, b )

Computes the least common multiple (lcm).

var v = lcm( 48, 18 );
// returns 144

If either a or b is 0, the function returns 0.

var v = lcm( 0, 0 );
// returns 0

v = lcm( 2, 0 );
// returns 0

v = lcm( 0, 3 );
// returns 0

Both a and b must have integer values; otherwise, the function returns NaN.

var v = lcm( 3.14, 18 );
// returns NaN

v = lcm( 48, 3.14 );
// returns NaN

v = lcm( NaN, 18 );
// returns NaN

v = lcm( 48, NaN );
// returns NaN


var randu = require( '@stdlib/random-base-randu' );
var round = require( '@stdlib/math-base-special-round' );
var lcm = require( '@stdlib/math-base-special-lcm' );

var a;
var b;
var v;
var i;

for ( i = 0; i < 100; i++ ) {
    a = round( randu()*50 );
    b = round( randu()*50 );
    v = lcm( a, b );
    console.log( 'lcm(%d,%d) = %d', a, b, v );

See Also


This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.





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