<!DOCTYPE html>
<html>
<head>
<title>Unit 2 - Q10</title>
<script type="text/javascript">
var no=4,half,flag,i;
document.write("No. to check for prime : " + no + "<br>");
half=no/2;
for(i=2,flag=0;i<=half;i++)
{
if(no%i==0)
{
flag=0;
break;
}
else
flag=1;
}
if(no==2||no==3)
flag=1;
if(flag==1)
document.write("Ans. : " + no + " is a prime no.");
else
document.write("Ans. : " + no + " is not a prime no.");
</script>
</head>
</html>
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