diff --git a/src/main/java/src/TasksFrame.java b/src/main/java/src/TasksFrame.java
index 0ec3aa5..f3058a4 100644
--- a/src/main/java/src/TasksFrame.java
+++ b/src/main/java/src/TasksFrame.java
@@ -109,7 +109,7 @@ public class TasksFrame extends JFrame {
 
     }
 
-    private int ePhi(Integer n) {
+    public int ePhi(Integer n) {
 
         LinkedList<Object> menge = new LinkedList<>();
 
@@ -121,7 +121,7 @@ public class TasksFrame extends JFrame {
         return menge.size();
     }
 
-    private int ggt(int a, int b) {
+   public int ggt(int a, int b) {
 
         int h;
         if (a == 0) return 0;
diff --git a/src/test/java/src/TasksFrameTest.java b/src/test/java/src/TasksFrameTest.java
index ebe61ca..96efb8a 100644
--- a/src/test/java/src/TasksFrameTest.java
+++ b/src/test/java/src/TasksFrameTest.java
@@ -46,6 +46,18 @@ class TasksFrameTest {
         assertEquals(3,p3);
     }
 
+    @Test
+    void test_ePhi(){
+        TasksFrame tasksFrame = new TasksFrame();
+        int i = tasksFrame.ePhi( 10);
+        assertEquals(4, i);
+        int a = tasksFrame.ePhi(25);
+        assertEquals(20, a);
+        int b = tasksFrame.ePhi(15);
+        assertEquals(8, b);
+        int c = tasksFrame.ePhi(35);
+        assertEquals(24, c);
+    }
     }