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Least common multiple of an array of integer numbers.
Created: 2005.11.03 - Modified 2005.11.28

//+ Jonas Raoni Soares Silva
//@ http://jsfromhell.com/math/mmc [rev. #1]

mmc = function(o){
    for(var i, j, n, d, r = 1; (n = o.pop()) != undefined;)
        while(n > 1){
            if(n % 2){
                for (i = 3, j = Math.floor(Math.sqrt(n)); i <= j && n % i; i += 2);
                d = i <= j ? i : n;
            }
            else
                d = 2;
            for(n /= d, r *= d, i = o.length; i; !(o[--i] % d) && (o[i] /= d) == 1 && o.splice(i, 1));
        }
    return r;
};

<form action="">
<fieldset>
    <legend>M?nimo M?ltiplo Comum</legend>
    <label for="numbers">N?meros:</label> <input type="text" id="numbers" value="2 3 4 7 8" />
    <br /><input type="submit" value="Calcular MMC" />
</fieldset>
</form>

<script type="text/javascript">
//<![CDATA[

//http://www.jsfromhell.com/geral/event-listener
addEvent(document.forms[0], "submit", function(e){
    alert(mmc(document.forms[0].numbers.value.split(" ")))
    e.preventDefault();
});

//]]>
</script>

mmc(numbers: Array): Integer

Returns the least numer able to be divided by all the numbers passed as parameter, the least common multiple.

numbers

array of integer numbers

0 1 2 3 4 5