ⓘ 123 (number)

                                     

ⓘ 123 (number)

  • 123 is a Lucas number. It is the eleventh member of the Mian-Chowla sequence.
  • Along with 6, 123 is one of only two positive integers that is simultaneously two more than a perfect square and two less than a perfect cube 123 = 11 2 + 2 = 5 3 - 2.
                                     

1. In telephony

  • The emergency telephone number in Colombia
  • The telephone number of the speaking clock for the correct time in the United Kingdom
  • The electricity emergency telephone number in Indonesia
  • The medical emergency telephone number in Egypt
  • The Notation for national and international telephone numbers Recommendation ITU-T Recommendation E.123 defines a standard way to write telephone numbers, e-mail addresses, and web addresses
                                     

2. In other fields

123 is also:

  • The atomic number of the yet-to-be-discovered element unbitrium
  • 123 interbank network, shared cash network in Egypt
  • 123 film, a 2002 Indian film
  • 123 song, 1965 song written and recorded by Len Barry
  • 123 New Jersey bus