Notice the film released April 19, 1973, the 119th day of the year. It was released 15-days after the opening of the World Trade Centers in New York, April 4, 1973.
The film was released by MGM . 13+7+13 = 33
Notice it runs 1:37 (1 hour 37 minutes) 137, the 33rd prime
The film is set in New York, in the year 2022, and the population of the city is said to be 40-million. The world is horribly polluted, and people are horribly poor. The food of the day is known as Soylent X. There are multiple colors of Soylent, but the latest and most common is Soylent Green, which is said to be made from Soy. By the end of the film however, you find out that Soylent Green is made from people, and it is people, that are feeding the people.
The film is based on the book, Make Room! Make Room!, by HH.
While it doesn't look like things will be as bad as they're presented in this film by the time we reach 2022, we should consider the point about food, and what's really in it.