123 (number)

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← 122 123 124 →
Cardinal one hundred twenty-three
Ordinal 123rd
(one hundred twenty-third)
Factorization 3 × 41
Divisors 1, 3, 41, 123
Greek numeral ΡΚΓ´
Roman numeral CXXIII
Binary 11110112
Ternary 111203
Quaternary 13234
Quinary 4435
Senary 3236
Octal 1738
Duodecimal A312
Hexadecimal 7B16
Vigesimal 6320
Base 36 3F36

123 (one hundred [and] twenty-three) is the natural number following 122 and preceding 124.

In mathematics[edit]

  • 123 is a Lucas number.[1] It is the eleventh member of the Mian-Chowla sequence.[2]
  • 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 = 112 + 2 = 53 - 2).[3]

In religion[edit]

The Book of Numbers says that Aaron died at the age of 123.[4]

In telephony[edit]

In other fields[edit]

123 is also:

See also[edit]

References[edit]

  1. ^ Friedman, Erich (30 April 2005). "What's Special About This Number?". Stetson University. Archived from the original on 10 February 2010. Retrieved 2010-02-08. 
  2. ^ "Mian-Chowla Sequence". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. 2016-04-19. Retrieved 2016-04-19. 
  3. ^ Conrad, Keith. "Examples of Mordell's Equation" (PDF). University of Connecticut, Mathematics Department. Retrieved 2017-06-24. 
  4. ^ Numbers 33:39