"Salò, or the 120 Days of Sodom" the notorious film from Pier Paolo Pasolini which was banned in the UK for many years.

The working title for "Snakes on a Plane" was "Pacific Air Flight 121"

A 1978 French film "One, Two, Two: 122, rue de Provence"

Both versions of "The Taking of Pelham 123"

A South Korean film "124 gunbudae" meaning "Special Force 124"

Although I have not been including short films, I mention a 1961 one called "660124: The Story of an IBM Card" as it was a very early film (his second) by Brian De Palma.

A 1959 French film "125 rue Montmartre"

A truly obscure film called 1126 by Kurt George Gjerde. This is his only film which he also wrote and edited.

Danny Boyle's latest film which is now in the post production stage is called "127 Hours". The lead is played by James Franco. As this film is likely to be of interest to many, the summary of the plot per IMDB is:

127 Hours is the true story of mountain climber Aron Ralston's (James Franco) remarkable adventure to save himself after a fallen boulder crashes on his arm and traps him in an isolated canyon in Utah. Over the next five days Ralston examines his life and survives the elements to finally discover he has the courage and the wherewithal to extricate himself by any means necessary, scale a 65 foot wall and hike over eight miles before he is finally rescued. Throughout his journey, Ralston recalls friends, lovers (Clemence Poesy), family, and the two hikers (Amber Tamblyn and Kate Mara) he met before his accident. Will they be the last two people he ever had the chance to meet?

The 1965 film "The Bedford Incident" was known in Greece as "Vythisate to ypovryhio U-128".

There are no films in existence, apart from some obscure shorts, with 129 in the title.

Therefore unless anyone knows to the contrary, I hereby declare this thread to be closed.

My thanks to those who had participated over the last 15 months.