diff --git a/prime_num.cpp b/prime_num.cpp
new file mode 100644
index 0000000..1809d29
--- /dev/null
+++ b/prime_num.cpp
@@ -0,0 +1,27 @@
+#include<iostream.h>
+#include<conio.h>
+
+void main()
+{
+  int i,no;
+  clrscr();
+  cout<<"Enter any num: ";
+  cin>>no;
+  if(no==1)
+  {
+  cout<<"Smallest prime num is 2";
+  }
+  for(i=2;i<no;i++)
+  {
+  if(no%i==0)
+  {
+  cout<<"Not prime num";
+  break;
+  }
+  }
+ if(no==i)
+ {
+ cout<<"Prime num";
+ }
+  getch();
+}