Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_6 (production_code INTEGER, written_by VARCHAR, season__number VARCHAR)
### Question:
What is the highest production code when the writer was brian egeston after season 5?
### Answer:
SELECT MAX(production_code) FROM table_name_6 WHERE written_by = "brian egeston" AND season__number > 5