diff --git a/Prime.h b/Prime.h
new file mode 100644
index 0000000..ad073b5
--- /dev/null
+++ b/Prime.h
@@ -0,0 +1,21 @@
+#include <cmath>
+#include <iostream>
+using namespace std;
+
+class Prime {
+	public:
+		bool Judge(int num) {
+			if(num<=1) {
+		cout<<num<<"��������"<<endl;
+		return false;
+		}
+		for(int i=2;i<sqrt(num);i++) {
+			if((num%i)==0) {
+				cout<<num<<"��������"<<endl;
+				return false;
+			}
+		}
+		cout<<num<<"������"<<endl;
+		return true;
+	}
+};