128 (number)

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128 is the natural number following 127 and preceding 129.

← 120 121 122 123 124 125 126 127 128 129 → List of numbers — Integers ← 100 110 120 130 140 150 160 170 180 190 →
Cardinal	One hundred [and] twenty-eight
Ordinal	128th
Factorization	27
Divisors	1 2 4 8 16 32 64
Roman numeral	CXXVIII
Binary	10000000
Hexadecimal	80

Contents 1 In mathematics 2 In bar codes 3 In computing 4 In the military 5 In transportation 6 In other fields 7 See also 8 External link 9 References

[edit] In mathematics

One hundred twenty-eight is the seventh power of 2. It is the largest number which can not be expressed as the sum of any number of distinct squares. But it is divisible by the total number of its divisors, making it a refactorable number.

The sum of Euler's totient function φ(x) over the first twenty integers is 128.

128 can be expressed by a combination of its digits with mathematical operators thus 128 = 2^{8 - 1}, making it a Friedman number in base 10. 128 is a Zuckerman number in bases 7, 10 and 15.

A hepteract has 128 vertices.

[edit] In bar codes

• Code 128 is a Uniform Symbology Specification (USS Code 128) alphanumeric bar code that encodes text, numbers, numerous functions, and designed to encode all 128 ASCII characters (ASCII 0 to ASCII 128.), as used in the shipping industry.
• International Symbology Specification Code (ISS Code) 128 is the USS Code for encoding of extended non-English ASCII characters

• Subdivisions include:
  • 128A (0-9, A-Z, ASCII control codes, special characters)
  • 128B (0-9, A-Z, a-z, special characters)
  • 128C (00-99 numeric characters)
  • GS1-128 application standard of the GS1 implementation using the Code 128 barcode specification
  • ISBT 128 system for blood product labeling for the International Society of Blood Transfusion

[edit] In computing

• 128-bit key size encryption for secure communications over the Internet
  • IPv6 uses 128-bit (16-byte) addresses
  • Any bit with a binary prefix is 128 bytes of a lesser binary prefix value, such as 1 gibibit is 128 mebibytes
  • 128-bit integers, memory addresses, or other data units are those that are at most 128 bits 16 octets wide

• ASCII includes definitions for 128 characters (33 non-printing characters, mostly obsolete control characters that affect how text is processed, and 94 printable)
• CAST-128 is a block cipher used in a number of products, notably as the default cipher in some versions of GPG and PGP.
• 28 mebibytes is a common size for USB flash drives and memory cards
• Graphics cards have a 128-bit or 256-bit data bus to memory. * Sony's Playstation 2 CPU Emotion Engine 128 bit processor
• Macintosh 128K was the original Apple Macintosh personal computer released in 1984
• Laser 128 released by VTech was a clone of the Apple II released in 1984
• Commodore 128 home/personal computer which had a 128 KB of memory released in 1985
• Enterprise Zilog Z80 home computer released in 1985
• Jane 128 was a GUI-based integrated software package for the Commodore 128 personal computer released in 1985
• RIVA 128 (Real-time Interactive Video and Animation accelerator) was one of the first consumer graphics chips to integrate 3D and video acceleration in 1997
• Super Mario 128 is a Nintendo game released in 2002

[edit] In the military

• USNS Mission San Luis Rey (T-AO-128) was a United States Navy Mission Buenaventura class fleet oiler fleet oilers during World War II
• USS Arenac (APA-128) was a United States Navy Haskell-class attack transport during World War II
• USS Cavallaro (APD-128) was a United States Navy Crosley-class high speed transport ship
• USS Leonis (AK-128) was a United States Navy Crater-class cargo ship during World War II
• USS Velocity (AM-128) was a United States Navy Auk-class minesweeper which removed mines from minefields laid in the water

[edit] In transportation

• A small car manufactured by Fiat, the Fiat 128 from 1969 to 1985. SEAT 128 was a 2-door coupé version of the car
• The BMW 128i convertible
• Route 128 Station is a stop on the Massachusetts Bay Transportation Authority Attleboro/Providence MBTA Commuter Rail line in Westwood, Massachusetts
• STS-128 is a planned Space Shuttle Atlantis mission to the International Space Station for 2009

[edit] In other fields

One hundred [and] twenty-eight is also:

• The year AD 128 or 128 BC
• 128 AH is a year in the Islamic calendar that corresponds to 745 – 746 CE
• 128 Nemesis is a main belt asteroid
• Ross 128 is a red dwarf star, eleventh closest star system to the Solar System
• 128P/Shoemaker-Holt is a periodic comet in the solar system
• The atomic number of unbioctium, an element yet to be discovered.
• The number of sons of Anathoth at the Census of men of Israel upon return from exile (the Bible, Ezra 2:23). Also, the number of singers, sons of Asaph (Ezra 2:41).
• The number of musical instruments specified in General MIDI. Sometimes they are numbered 0 to 127 and sometimes they are numbered 1 to 128.
• A film format: 128 film
• The Republic of the Congo ranks #128 in world population
• Sonnet 128 by William Shakespeare
• The TV series Dawson's Creek ran on The WB Television Network from 1998 to 2003 for 128 episodes
• The TV series Emergency! ran on NBC from 1972 to 1979 for 128 episodes
• The Japanese anime series Captain Tsubasa ran on Animax and TV Tokyo from 1983 to 1986 for 128 episodes
• Channel 128 on Sirius Satellite Radio is SIRIUS Nascar Radio
• In music, a hundred twenty-eighth note is a note played for 1/128 of the duration of a whole note
• The 128th Kentucky Derby was won by War Emblem on May 4, 2002
• The 128th Westminster Kennel Club Dog Show was won by Ch. Darbydale's All Rise Pouch Cove, a Newfoundland on February 10, 2004

[edit] See also

• List of highways numbered 128
• United Nations Security Council Resolution 128

[edit] External link

• Code 128 specification at OpenBarcode.org

[edit] References