11

11 (eleven) is a positive integer following 10 and preceding 12. Its ordinal form is written "11th" or "eleventh".
== Properties ==
*11 is an .
*11 is the first number which cannot be with a 's ten , using each finger as a tally mark. In English, it is the smallest positive integer requiring three syllables and the largest with a single-morpheme name. Its etymology originates from a Germanic compound ainlif meaning "one left".http://www.etymonline.com/index.php?term=eleven
*11 is the number for the French department of .
*11 is the smallest non-trivial repdigit. Multiples of it up through 99 are also repdigits. 11 is a the first number.
*11 is the largest known number n such that 2^n contains only even decimal digits. The decimal expansion of 2^11 is 2048, which contains all even digits. 2^n for all 11<n<1000000 contains at least one odd digit.
== In googology ==
*11 is also equal to \(n(2)\) in the block subsequence theorem.
*In Greek-based number naming systems, 11 is associated with prefix "endeka-", and with prefix "undeci-" in Latin systems.
*Wiki user Denis Maksudov coined the name zeralum for this number, and it's equal to \(f_0(10)\) using the fast-growing hierarchy.Traveling To The Infinity Retrieved 2021-06-28. This name belongs to the Alpha series.
*In duodecimal, the digit eleven is normally represented by an upside-down 3 and is named "el".
*DeepLineMadom coined the name zeroogol for this number, and it's equal to 10[0]100 using DeepLineMadom's Array Notation.DeepLineMadom's googology - Numbers I've coined (Retrieved 4 May 2022)
== In popular culture ==
*The phrase "oh yeah" is spoken 11 times in the hit song "Oh Yeah".
== See also ==
*Eleventy
*Eleventyplex
== Sources ==
Category:Numbers
Category:Class 1
Category:Numbers with 1 to 2 digits
Category:Palindromic prime numbers
 
Category:Prime numbers
Category:Repdigit numbers