110 (number)

110 (one hundred [and] ten) is the natural number following 109 and preceding 111.

← 109 110 111 →
← 110 111 112 113 114 115 116 117 118 119 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	one hundred ten
Ordinal	110th (one hundred tenth)
Factorization	2 × 5 × 11
Divisors	1, 2, 5, 10, 11, 22, 55, 110
Greek numeral	ΡΙ´
Roman numeral	CX, cx
Binary	11011102
Ternary	110023
Senary	3026
Octal	1568
Duodecimal	9212
Hexadecimal	6E16

In mathematics

110 is a sphenic number and a pronic number.^[1] 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, ${\displaystyle 110=5^{2}+6^{2}+7^{2}}$.

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^[2] and a self number.^[3]

In other fields

110 is also:

• 1-1-0, the emergency telephone number used to reach police services in Iran, Germany, Estonia, China, Indonesia, and Japan. Also used to reach the fire and rescue services in Norway and Turkey.
• 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^[4] 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.^[5]
• 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".^{[citation needed]} Similarly eleventy-eleven was used in nineteenth century Mississippi in the same role.^[6]