Untitled

<html>
<head>
<title>Bilangan Prima</title>
</head>
<body>
<SCRIPT LANGUAGE = "JavaScript">
<!--
function cekPrima( n ) {
    var max = Math.sqrt(n);
    for( var i = 2;  i <= max;  i++ ) {
        if( n % i == 0 )
            return false;
    }
    return true;
}

for( var n = 2;  n < 20;  n++ ) {
        if( cekPrima(n) ) {
  document.write( n + '<BR>' );
 }
}

// -->
</SCRIPT>
</body>
</html>