diff --git a/armstrong.py b/armstrong.py
new file mode 100644
index 0000000..8f14991
--- /dev/null
+++ b/armstrong.py
@@ -0,0 +1,14 @@
+num = int(input("Enter a number: "))
+sum = 0
+
+temp = num
+while temp > 0:
+   digit = temp % 10
+   sum += digit ** 3
+   temp //= 10
+
+
+if num == sum:
+   print(num,"is an Armstrong number")
+else:
+   print(num,"is not an Armstrong number")
\ No newline at end of file
diff --git a/factorial.py b/factorial.py
new file mode 100644
index 0000000..c4dc881
--- /dev/null
+++ b/factorial.py
@@ -0,0 +1,8 @@
+def fact(n):
+    if n==1:
+        return 1
+    else:
+        return n*fact(n-1)    
+
+n= int(input("Enter a no:"))
+print("Factorial is : ",fact(n))
\ No newline at end of file
diff --git a/lcm.py b/lcm.py
new file mode 100644
index 0000000..4dbaaa2
--- /dev/null
+++ b/lcm.py
@@ -0,0 +1,16 @@
+def lcm(x, y):
+   if x > y:
+       greater = x
+   else:
+       greater = y
+
+   while(True):
+       if((greater % x == 0) and (greater % y == 0)):
+           lcm = greater
+           break
+       greater += 1
+
+   return lcm       
+a=int(input("Enter the first no: ")) 
+b=int(input("Enter the second no: "))    
+print ("Lcm is : ",lcm(a,b))
\ No newline at end of file
diff --git a/prime.py b/prime.py
new file mode 100644
index 0000000..5751ce4
--- /dev/null
+++ b/prime.py
@@ -0,0 +1,17 @@
+num = 407
+
+
+
+if num > 1:
+  
+   for i in range(2,num):
+       if (num % i) == 0:
+           print(num,"is not a prime number")
+           print(i,"times",num//i,"is",num)
+           break
+   else:
+       print(num,"is a prime number")
+       
+
+else:
+   print(num,"is not a prime number")
\ No newline at end of file