diff --git a/June21/StandardLibrary/raisingexceptions.py b/June21/StandardLibrary/raisingexceptions.py
new file mode 100644
index 0000000..2561ca7
--- /dev/null
+++ b/June21/StandardLibrary/raisingexceptions.py
@@ -0,0 +1,42 @@
+def is_prime(number):
+    """
+    This function calculates if the number is prime or not
+
+    Args: 
+        number(int): Number to check for prime
+
+    Returns:
+        bool: True if prime False otherwise
+
+    Raises:
+        ValueError: Value Error is raised when the argument to this function is 
+        not an integer or integer with less than 2 as value
+
+    Examples:
+        >>> is_prime(7)
+        True
+        >>> is_prime(10)
+        False
+    """
+    if not isinstance(number, int):
+        raise ValueError('number should be of type int')
+    if number< 2:
+        raise ValueError('number should be greater than or equal 2')
+    for index in range(2, number//2 + 1):
+        if number%index == 0:
+            return False
+    return True
+
+
+if __name__ == '__main__':
+    while True:
+        try:
+            number = int(input('Enter the number: '))
+            if is_prime(number):
+                print(f"{number} is prime")
+            
+            choice = input('Do you want to continue: y or n ')
+            if choice == 'n':
+                break
+        except ValueError as ve:
+            print(ve)
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