diff --git a/src/org/nwapw/abacus/number/NaiveNumber.java b/src/org/nwapw/abacus/number/NaiveNumber.java
index 5bd3cb0..b201a91 100755
--- a/src/org/nwapw/abacus/number/NaiveNumber.java
+++ b/src/org/nwapw/abacus/number/NaiveNumber.java
@@ -29,7 +29,7 @@ public class NaiveNumber implements NumberInterface {
 
     @Override
     public int precision() {
-        return 15;
+        return 18;
     }
 
     @Override