Practical – 117.1 : Check Given Number is Prime or Not
Program Code :Â
<!DOCTYPE html>
<html>
<head>
 <title>Prime Number Checker</title>
 <style>
   body {
     font-family: Arial;
     text-align: center;
     margin-top: 50px;
   }
   input, button {
     font-size: 18px;
     margin: 5px;
     padding: 8px;
   }
   #result {
     font-weight: bold;
     margin-top: 15px;
   }
 </style>
</head>
<body>
 <h2>Check Prime Number</h2>
 <input type=”number” id=”number” placeholder=”Enter a number”>
 <button onclick=”checkPrime()”>Check</button>
 <div id=”result”></div>
 <script>
   function checkPrime() {
     const num = parseInt(document.getElementById(“number”).value);
     let isPrime = true;
     if (num <= 1) {
       isPrime = false;
     } else {
       for (let i = 2; i <= Math.sqrt(num); i++) {
         if (num % i === 0) {
           isPrime = false;
           break;
         }
       }
     }
     const result = document.getElementById(“result”);
     if (isPrime) {
       result.textContent = num + ” is a Prime Number.”;
       result.style.color = “green”;
     } else {
       result.textContent = num + ” is Not a Prime Number.”;
       result.style.color = “red”;
     }
   }
 </script>
</body>
</html>
