Image from the jigsaw puzzles.

23 is the fifth of the Numbers. It is the only prime number in the sequence. Below is a list of appearances on the show, by episode chronology.

Occurrences in the show

Season 1

Oceanic Flight 815 left Sydney from Gate 23.

Season 2

There were 23 survivors at the tail section of the plane.

Karl inside Room 23.

Season 3

Channel 23 plays Drive Shaft.

Season 4

Season 5

  • Jack's cell phone number was 323-555-0156. ("The Lie")
  • Ben instructed Jack to meet up at the Long Beach Marina, Slip 23. ("The Little Prince")
  • The photo of the island that Jack saw in the Lamp Post station was dated 9/23/54. The sum of these digits equals 23: 9+2+3+5+4. ("316")
  • As Eloise Hawking was explaining the origins of the Lamp Post to everyone, the camera sweeps over the floor, and scribbled on the map of the Pacific are several numbers — including 30' 23 N, and 15' 22 E. ("316")
  • Widmore instructed Locke to dial 23 whenever Locke needed to get in contact with him on the international phone that he gave him. ("The Life and Death of Jeremy Bentham")
  • Richard first met Daniel in 1954 and again 23 years later in 1977. ("Jughead") ("The Variable")
  • Sayid assassinated a man at the address 23 […Russian text]. ("He's Our You")
  • On the Sports Illustrated that Miles reads in Some Like It Hoth, it reads "After 23 years…"

Season 6

Jack is revealed to be number 23 inside Jacob's cave wall in "The Substitute".

  • The numbers in the license plate (4DQ5554) of the taxi that Kate carjacked add up to 23. ("What Kate Does")
  • Jack Shephard was number 23 on Jacob's list on the cave wall. ("The Substitute")
  • When the lens assembly at the top of the Lighthouse was aligned to 23 degrees, Jack Shephard's childhood home could be observed. ("Lighthouse")
  • The numerical address for the home of David Shepard's mother was 23. ("Lighthouse")
  • When Sayid was woken up by Omer in the flash-sideways, he commented that it was 2:30 in the morning. ("Sundown")
  • When Lapidus was lifting off the Ajira plane, the camera showed the odometer spin past 23, then 42. ("The End")
  • At the concert, Jack's family sat at table 23. ("The End")
  • The Apollo bar Sawyer bought at the hospital was on slot 23 of the candy machine. ("The End")
  • The finale of the series aired on Sunday, May 23, 2010.


The Lost Experience

Find 815

Outside the show and real life occurrences

  • The 23rd Psalm starts "The Lord is my Shepherd," which is also the number given to Jack Shephard. [1]
  • In the Bible 23 is the number of letters in the verse "And God said, ‘Let there be light!’ And there was light." || ויאמר א-להים יהי אור ויהי אור – Genesis 1:3.
  • Building 23 is the name of the building in Burbank, CA where Lost executive producer Damon Lindelof works.
  • 23-skidoo (sometimes spelled 23-skiddoo) was an American slang phrase in the early 20th century meaning, "Let's get out of here as fast as we can!"
  • 23 is said to be the number of the Illuminati and as such has part in many conspiracy theories. One of the most notable examples is Robert Anton Wilson and Robert Shea's novel, The Illuminatus! Trilogy, in which the repeated occurrences of the number 23 in seemingly disparate situations is a principal plot element. There have been a few quotes from Damon Lindelof in interviews, pertaining to Illuminatus! and its influence on Lost.
  • The Principia Discordia, principle text of the Discordian religion, holds high regard for "The Holy 23," due to its relation to the number 5. The Law of Fives states that "All things happen in fives, or are divisible by or are multiples of five, or are somehow directly or indirectly appropriate to 5. The Law of Fives is never wrong."[2] The Principia and its constituent ideas were a strong influence on Robert Anton Wilson, among others.[3]
  • Humans have 23 pairs of chromosomes.
  • There are 23 discs in the human spine, Jack is a spinal surgeon.
  • The Earth's axis is tilted at a 23.5 degree angle.
  • Latitude 4.815, Longitude 162.342 are the GPS coordinates that lead to a point in the Pacific Ocean on the trail from Australia to L.A. If you go to these coordinates in Google Maps , there is a real island very close to those coordinates. On that island there is a runway marked 23, and another runway marked 5.
  • The average person breathes about 23,000 times a day.
  • In the sci-fi TV series Max Headroom, the heroes worked for TV station Network 23.
  • It takes 23 seconds for blood to make a complete circuit of the human body.
  • Michael Jordan and his famous jersey 23.
  • Lebron James and his famous jersey 23.
  • There are 23 steps between floors in the Pentagon.
  • Julius Caesar was stabbed 23 times.
  • Laura Palmer was killed on Feb. 23.
  • The Number 23 is a movie starring Jim Carrey. It was released on Feb. 23, 2007.
  • In the Charles Dickens novel, A Tale of Two Cities, Sydney Carton sacrifices his life by taking his look-alike Charles Darnay's place at the guillotine. He is prisoner number 23.