diff --git a/mihxil-algebra/src/main/java/org/meeuw/math/abstractalgebra/padic/impl/Utils.java b/mihxil-algebra/src/main/java/org/meeuw/math/abstractalgebra/padic/impl/Utils.java
index 2d9489e6..1bd3ea9d 100644
--- a/mihxil-algebra/src/main/java/org/meeuw/math/abstractalgebra/padic/impl/Utils.java
+++ b/mihxil-algebra/src/main/java/org/meeuw/math/abstractalgebra/padic/impl/Utils.java
@@ -102,11 +102,13 @@ public static AdicDigits sumAdicDigits(byte base, AdicDigits... summands) {
                     r += byteAndIndex.get().value;
                 }
             }
-            if (! anyPresent) {
-                break;
-            }
+            detectRepetition &= anyPresent;
+
             result = DigitUtils.ensureCapacity(i, result);
             result[i] = (byte) (r % base);
+            if (! anyPresent && carry == 0) {
+                break;
+            }
             i++;
             if (detectRepetition) {
                 DigitUtils.CarryAndIndices check = new DigitUtils.CarryAndIndices(
diff --git a/mihxil-algebra/src/test/java/org/meeuw/test/math/abstractalgebra/padic/PadicIntegersTest.java b/mihxil-algebra/src/test/java/org/meeuw/test/math/abstractalgebra/padic/PadicIntegersTest.java
index 140b0e20..985270de 100644
--- a/mihxil-algebra/src/test/java/org/meeuw/test/math/abstractalgebra/padic/PadicIntegersTest.java
+++ b/mihxil-algebra/src/test/java/org/meeuw/test/math/abstractalgebra/padic/PadicIntegersTest.java
@@ -26,9 +26,13 @@ public void simple() {
         PAdicInteger b = p5.of("0", "340");
 
         PAdicInteger c = a.p(b);
-
         System.out.printf("\n %s\n %s\n---------+\n%s%n", a, b, c);
 
+        assertThat(c.bigIntegerValue().intValue()).isEqualTo((4 + 3 * 5  + 2 * 5 * 5 ) + (4 * 5 + 3 * 5 * 5));
+
+
+        assertThat(c.toString()).isEqualTo("...0 1124₅");
+
         log.info("{} + {} = {}", a.bigIntegerValue(), b.bigIntegerValue(), c.bigIntegerValue());
     }