Untitled

<html>
<body style="background-color: #000;">
<script>
function start() {
var cnum = 0
cnum = cnum+1
while (true) {
setTimeout(function() {
var txt = document.getElementById("txt");
var txts = txt.innerText
if (String(cnum/2).indexOf(".") == -1;) {
var newstring = txts+"\n"+"Found Prime Number : "+String(cnum)
txts.innerText = newstring
}
},100)
}
}
</script>
<div align="center">
<button onclick="start()" style="background-color: white; font-size: 20px; color: white;"> Start Compilation
</button>
</div>
<div style="color: white;" align="center" id="txt">
</div>
</body>
</html>