var text = 'encoded text';

    var prime = 0;
    var comp = 0;
    var text;
var line = "";
    for (i = 0; i < text.length; i++) {
        var c = text.charAt(i);
        var comparison =parseInt(c);
        if (comparison) {
            var n = Number(c);
            if ((n != 1) && (n != 0)) {
                if (isprime(n)) {
                    prime += n;
                }
                if (!isprime(n)) {
                    comp += n;
                }
            }
        } else if ((line.length < 25) && (comparison != 1)) {
            c = c.charCodeAt(0);
            c++;
            c = c.toString();
            temp = c;
            c = String.fromCharCode(temp);
            line += c;
        }
    }
    var sum = 1 * prime * comp;
    line += sum;
    WScript.Echo(line);




function isprime(n) {
    var primer = true;
    var ValidChars = "2357";
    var str = n.toString();
    if (ValidChars.indexOf(str.charCodeAt(0)) == -1) {
        primer = false;
    }
    return primer;
}