mysql> create table t1 (i int auto_increment primary key) engine = innodb auto_increment = 100;
Query OK, 0 rows affected (0.10 sec)

mysql> insert into t1 values (null), (null);
Query OK, 2 rows affected (0.07 sec)
Records: 2  Duplicates: 0  Warnings: 0

mysql> select * from t1;
+-----+
| i   |
+-----+
| 100 |
| 101 |
+-----+
2 rows in set (0.00 sec)