在MySQL中，smallint(6) unsigned的最大值是多少？

-32768

65535

32767

mysql> create table smallIntDemo
-> (
-> FirstNumber smallint(6) zerofill
-> );
Query OK, 0 rows affected (1.95 sec)

mysql> insert into smallIntDemo values(2);
Query OK, 1 row affected (0.21 sec)

mysql> insert into smallIntDemo values(23);
Query OK, 1 row affected (0.21 sec)

mysql> insert into smallIntDemo values(234);
Query OK, 1 row affected (0.17 sec)

mysql> insert into smallIntDemo values(2345);
Query OK, 1 row affected (0.15 sec)

mysql> insert into smallIntDemo values(23456);
Query OK, 1 row affected (0.48 sec)

mysql> insert into smallIntDemo values(234567);
ERROR 1264 (22003): Out of range value for column 'FirstNumber' at row 1

mysql> insert into smallIntDemo values(111111);
ERROR 1264 (22003): Out of range value for column 'FirstNumber' at row 1

mysql> select *from smallIntDemo;

+-------------+
| FirstNumber |
+-------------+
| 000002 |
| 000023 |
| 000234 |
| 002345 |
| 023456 |
+-------------+
5 rows in set (0.00 sec)