Iccanobif primes: Difference between revisions

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@@ Line 500: / Line 500: @@
     size_t len = str.size();
     if (len > max_digits) {
-        str = str.substr(0, max_digits / 2) + "..." +
+        str.replace(max_digits / 2, len - max_digits, "...");
-              str.substr(len - max_digits / 2);
         str += " (";
         str += std::to_string(len);