btnButton.addEventListener(MouseEvent.CLICK, button); // Requires a button called btnButton to press to start function

​

function button (evt)

{

    var number:Number = Number(txtTall.text); // Requires a number input or you could change it to preferred number in code

    var numbernew:Number = Number(txtTall.text);

    var primenumberout:Array = [];

    for(var i:int = 2; i <= number;i++)

    {   

        while(number % i == 0)

        {

            primenumberout.push(i);

            number /= i;

        }

    }

    if(number > 1)

        {

            primenumberout.push(number);

        }

    txtPrimenumber.text = String(numbernew+" = "+primenumberout.join(" · ")); // Requires a txt field for output, or you can add a trace command instead

    }