85 (number)

85 (eighty-five) is the natural number following 84 and preceding 86.

← 84 85 86 →
← 80 81 82 83 84 85 86 87 88 89 → List of numbers Integers ← 0 10 20 30 40 50 60 70 80 90 →
Cardinal	eighty-five
Ordinal	th
Numeral system	85
Factorization	$5\cdot 17$
Divisors	1, 5, 17, 85
Greek numeral	ΠΕ´
Roman numeral	LXXXV
Binary	10101012
Ternary	100113
Senary	2216
Octal	1258
Duodecimal	7112
Hexadecimal	5516

In mathematics

Eighty-five is the twenty-fourth distinct biprime and the fourth of the form (5.q). The aliquot sum of 85 is 23 within the aliquot sequence (23,1,0) 85 being the second composite number in the 23-aliquot tree.

85 is the first number in the second cluster of three discrete biprimes with subsequent 86 and 87 being themselves discrete biprimes.

Eighty-five is an octahedral number, a centered triangular number, a centered square number, a decagonal number, and a Smith number.

85 can be expressed as a sum of two squares in two ways, 85= 9² + 2² = 7² + 6²

85 - the number of calories in Joe Watson's crunchy bar.

85 is a repdigit in base 4 (1111), being the case 5×17 of a product of two consecutive Fermat primes. (The known Fermat primes are 3, 5, 17, 257, and 65,537.) Every such product is 1111 in base one less than the smaller of its two prime factors.

In astronomy

• Messier object M85, a magnitude 10.5 lenticular galaxy in the constellation Coma Berenices
• The New General Catalogue object NGC 85, a galaxy in the constellation Andromeda
• The Saros number of the solar eclipse series which began on -170 March 14 and ended on 1110 April 20. The duration of Saros series 85 was 1280.1 years, and it contained 72 solar eclipses. Further, the Saros number of the lunar eclipse series which began on -103 August 2 and ended on 1267 November 3. The duration of Saros series 85 was 1370.3 years, and it contained 77 lunar eclipses.

In other fields

Published in Brazil:
ISBN: 85..

Eighty-five is also:

• The atomic number of astatine
• The model number of SU-85
• The number of the French department Vendée
• The designation of Interstate 85, a U.S. freeway that runs from Alabama to Virginia
• The European route E85 from Klaipėda to Alexandropoúli
• The ISBN Group Identifier for books published in Brazil
• Number 85 is a webcomic novel created by Gemma Bright and Tammy Holliday.
• The year AD 85, 85 BC, or 1985.
• E85 gas is 85% ethanol and 15% conventional gas
• The 85 Ways to Tie a Tie, a book by Thomas Fink and Yong Mao
• The radix of the Ascii85 (sometimes called Base85) binary-to-text encoding
• "85 Days: The Last Campaign of Robert Kennedy" a book by Jules Witcover
• 85°C, a Taiwanese coffee store chain.
• Batman: the Animated Series ran on Fox from 1992–95 for 85 episodes
• Thirtysomething ran on ABC from 1987–91 for 85 episodes
• The IQ and nickname of Aaron in Alien 3
• "85", a 2000 rap single by YoungBloodz, featuring Big Boi & Cutty Cartel, from their debut album Against Da Grain
• The optimal number of pints that can be consumed - commonly known as "The Leffe coefficient".

In sports

MLB

• Pitchers who pitched 85 games in a single season include Kent Tekulve (1982); Mitch Williams and Frank Williams (1987); Jon Rauch and Matt Capps (2006)
• St. Louis Cardinals retired #85 for former owner August Busch, Jr. (age 85 in 1984).
• 85 is the highest uniform number retired in all of baseball

NFL

• Cincinnati Bengals Chad Ochocinco wears #85. During October 29, 2006 warm-ups, Ochocinco (then known as Chad Johnson) wore "Ocho Cinco" (Spanish for 8-5) on his jersey, which immediately became his nickname. On August 29, 2008, Chad legally changed his surname to "Ochocinco" (without the space since that is what he put on the forms).
• Denver Broncos wide receiver Lionel Taylor led the NFL in 1965, with 85 receptions
• Los Angeles Rams Jack Youngblood wore #85
• Miami Dolphins Mark Duper wore #85
• Miami Dolphins Nick Buoniconti wore #85
• Pittsburgh Steelers Jay Riemersma wore #85
• Pittsburgh Steelers Nate Washington wears #85
• San Diego Chargers Antonio Gates wears #85
• San Francisco 49ers Vernon Davis wears #85
• Washington Redskins Henry Ellard wore #85
• Derrick Mason has worn #85 for the Ravens and Titans.

External links

• 85
• Jorge Stolfi, The Hollywood Constant.
• Gemma Bright, Tammy Holliday, Number 85