What was the phone number that Glenn Miller immortalized associated with a hotel across from Penn Station?

The phone number Glenn Miller immortalized, associated with a hotel across from Penn Station, is Pennsylvania 6-5000. This number gained fame as the title of a popular song written by Bob Russell and played by Glenn Miller and his orchestra in the 1940s. The song's catchy melody and repetitive chorus brought attention to the Pennsylvania Hotel, which is located near Penn Station in Manhattan.

In the context of New York City's rich cultural history, this particular phone number became synonymous with the hotel itself, as it represented the vibrant nightlife and social scene of the era. The other phone numbers listed, while they may belong to other significant places or be recognizable in various contexts, do not have the same historical association with Glenn Miller or the Pennsylvania Hotel. Thus, Pennsylvania 6-5000 stands out as the correct answer.