110 (number)

In mathematics

110 is a sphenic number and a pronic number. Following the prime quadruplet (101, 103, 107, 109), at 110, the Mertens function reaches a low of −5.

110 is the sum of three consecutive squares, 110 = 5^2 + 6^2 + 7^2.

RSA-110 is one of the RSA numbers, large semiprimes that are part of the RSA Factoring Challenge.

In base 10, the number 110 is a Harshad number and a self number.

In other fields

110 is also:

• A percentage in the expression "To give 110%", meaning to give a little more effort than one's maximum effort
• Lowest number to not be considered a favourite by anyone among 44,000 people surveyed in a 2014 online poll and subsequently adopted by British television show QI as the show's favourite number in 2017.

Eleventy

;Compare twelfty.

As 110

• One hundred and ten is also known as "eleventy", a term made famous in its ordinal form by linguist and author J. R. R. Tolkien (Bilbo Baggins celebrates his eleventy-first birthday at the beginning of The Lord of the Rings) and derived from the Old English hund endleofantig.
• Eleventy is used in the comic reading of a phone number in the Irish TV series The Savage Eye by Dave McSavage playing an opiate user advertising life insurance.

Other meanings of ''eleventy''

• Eleventy has also been used to mean an indefinite large number - "lots". Similarly eleventy-eleven was used in nineteenth century Mississippi in the same role.

References

References

1. "Sloane's A002378 : Oblong (or promic, pronic, or heteromecic) numbers". OEIS Foundation.
2. "Sloane's A005349 : Niven (or Harshad) numbers". OEIS Foundation.
3. "Sloane's A003052 : Self numbers or Colombian numbers". OEIS Foundation.
4. Bellos, Alex. (2014-04-08). "'Seven' triumphs in poll to discover world's favourite number". The Guardian.
5. [http://www.etymonline.com/index.php?search=eleventy Etymology at www.etymoline.com]
6. Hubert Anthony Shands. (1893). "Some Peculiarities of Speech in Mississippi". Norwood Press.