Eleven (11) is the natural number following 10 and preceding 12.
Definition: It is the first prime number consisting of two identical digits, often called a repunit (11₂).
Etymology: The word “eleven” comes from Old High German roots that meant “one left” or “one remaining” (after taking away ten), distinguishing it from the base-10 pattern that follows.
Idioms: “The eleventh hour” refers to the last possible moment, stemming from the parable in the Bible. “Up to eleven” is an idiom from the film This Is Spinal Tap meaning to go beyond normal limits.
Representation: In addition to its numerical form, 11 can be represented using tallies, ten frames, and dice, often considered the first “teen” number.
You can watch this video to see several ways the number 11 is represented: I Can Show the Number 11 In So Many Ways | Jack Hartmann Jack Hartmann Kids Music Channel YouTube · Jun 28, 2022