# ⓘ 113 (number)

## ⓘ 113 (number)

• 113 is the natural number following 112 and preceding 114.
• 113 is a highly cototient number and a centered square number.
• It is the 30th prime number following 109 and preceding 127, so it can only be divided by one and itself. 113 is a Sophie Germain prime, a Chen prime and a Proth prime as it is a prime number of the form 7 × 2 4 + 1. 113 is also an Eisenstein prime with no imaginary part and real part of the form 3 n − 1 {\displaystyle 3n-1}. In base 10, this prime is a primeval number, and a permutable prime with 131 and 311.
• 355/113 approximates pi to six decimal places, with an error of less than 1/113 3. This means that 113/355 approximates the reciprocal of pi.
• 113 is the smallest positive integer that cannot be represented in the Four fours problem using standard rules.

## 1. Religion

• Psalms 113–118 constitute the Hallel, which is recited on the three great feasts: Passover, Weeks, and Tabernacles
• 113, the number of surah al-Falaq in the Quran

## 2. Telephony

113 is:

• The time telephone number in Argentina
• The medical emergency telephone number in Latvia and Norway
• The fire emergency telephone number in Indonesia
• The intelligence agency telephone number in Iran
• The police emergency telephone number in Italy, Luxembourg, Slovenia, and Vietnam

## 3. Other uses

• 113 band, a French hip hop group
• 113, the port number of the IDENT Internet protocol that helps identify the user of a particular TCP connection
• 113, in enduro, is regarded as an unlucky number to be given to a race entrant and is colloquially known as a "blind pew"

• 113 may refer to: 113 number a natural number AD 113 a year 113 BC, a year 113 band a French hip hop group 113 MBTA bus Massachusetts Bay Transportation
• highways are numbered 113 British Columbia Highway 113 New Brunswick Route 113 Nova Scotia Highway 113 Prince Edward Island Route 113 Quebec Route 113 National
• A 113 sometimes A - 113 A1 - 13 or A11 - 3 is an inside joke and easter egg in media created by alumni of California Institute of the Arts, referring to the
• U.S. Route 113 US 113 is a spur of US 13 in the U.S. states of Maryland and Delaware. The U.S. Highway runs 74.75 miles 120.30 km from US 13 in Pocomoke
• Route 113 is a numbered state highway running 3.4 miles 5.5 km in Rhode Island. The route connects Route 2 and Route 117 in the city of Warwick. Route
• M - 113 is a state trunkline highway in the US state of Michigan that runs in Grand Traverse County from M - 37 near Hannah to US Highway 131 US 131 in
• State Route 113 SR 113 is a north south state highway in the U.S. state of California that runs from around 10 miles 16 km in the Sacramento Valley
• State Route 113 SR 113 commonly called Burnt Mountain Road is a 9.98 - mile 16.06 km long Washington state highway in Clallam County on the Olympic
• fourteen is the natural number following 113 and preceding 115. 114 is an abundant number a sphenic number and a Harshad number It is the sum of the first