Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_26293875_3 (season__number VARCHAR, prod_no VARCHAR)

### Question ###
How many episodes had production number 2x13?

### Accurate SQL ###

SELECT COUNT(season__number) FROM table_26293875_3 WHERE prod_no = "2x13"