Cell 2187 served as the holding place for Princess Leia Organa on the original Death Star. Located within Detention Block AA-23, specifically on sub-level five, an area designated for political prisoners, Organa was confined here after her capture by Darth Vader. Subsequently, she endured torture administered by an IT-O Interrogation Unit. Following the destruction of Alderaan, her execution was planned, but Luke Skywalker, Han Solo, and Chewbacca successfully executed a daring rescue.
The designation "Cell 2187" pays homage to 21-87, a short film exploring a society dominated by machines. This film, directed by Arthur Lipsett, served as the inspiration for George Lucas in creating the film THX-1138.
Finn's designation as a stormtrooper within Star Wars: Episode VII The Force Awakens, namely FN-2187, is a deliberate reference by writer-director J.J. Abrams to this specific cell number featured in the original film.
Within A New Hope: The Princess, the Scoundrel, and the Farm Boy, Leia Organa is also identified as "Prisoner 2187."