129 (number)

129 (one hundred [and] twenty-nine) is the natural number following 128 and preceding 130.

In mathematics

129 is the sum of the first ten prime numbers. It is the smallest number that can be expressed as a sum of three squares in four different ways: , , , and .

129 is the product of only two primes, 3 and 43, making 129 a semiprime. Since 3 and 43 are both Gaussian primes, this means that 129 is a Blum integer.

129 is a repdigit in base 6 (333).

129 is a happy number.

In the military

• Raytheon AGM-129 ACM (Advanced Cruise Missile) is a low observable, sub-sonic, jet-powered, air-launched cruise missile used by the United States Air Force
• Soviet submarine K-129 (1960) was a Soviet Pacific Fleet nuclear submarine that sanked in 1968
• USNS Mission San Miguel (T-AO-129) was a United States Navy Mission Buenaventura-class fleet oilers during World War II
• USS Donald W. Wolf (APD-129) was a Crosley class high speed transport of the United States Navy
• USS Edsall (DE-129) was the lead ship of her class of destroyer escort in the United States Navy
• USS Marvin H. McIntyre (APA-129) was a United States Navy Haskell-class attack transport during World War II
• USS Phobos (AK-129) was a United States Navy Crater-class cargo ship during World War II
• USS Vital (AM-129) was a United States Navy Auk class minesweeper for removing mines from minefields laid in the water

In transportation

• 129 is the number of many roads, including Interstate 129 and U.S. Route 129
• LZ 129 Hindenburg was a German zeppelin which went up in flames while landing on May 6, 1937
• London Buses route 129 is a Transport for London contracted bus route in London
• STS-129 was a Space Shuttle mission to the International Space Station, flown in November 2009 by the shuttle Atlantis.
• 129 is a popular route connecting city center with Cracow University of Technology Campus

In other fields

129 is also:

• The year AD129 or 129 BC
• 129 AH is a year in the Islamic calendar that corresponds to 746–747 CE
• 129 Antigone is a main belt asteroid
• 129 is Jacob Pinkerton's favorite number.
• The atomic number of Unbiennium, an element yet to be discovered
• A film format: 129 film
• Liberia ranks #129 in world population
• Dent v. West Virginia, 129 U.S. 114 (1889), was an important United States Supreme Court case involving the reputable practice of physicians and state laws
• Sonnet 129 by William Shakespeare
• The TV series Becker ran on CBS from 1998 to 2004 for 129 episodes
• Channel 129 on Sirius Satellite Radio is CNBC
• Channel 129 on XM Radio is Bloomberg Radio
• Baseball's Sammy Sosa followed up his 66 home run total in 1999 with 63 in 2000, for a combined 2-year total of 129 home runs
• The 129th Kentucky Derby was won by Funny Cide on May 3, 2003
• The 129th Westminster Kennel Club Dog Show was won by Ch. Kan-Point's VJK Autumn Roses, a German Shorthaired Pointer on February 16, 2005
• 啊扯129

See also

• List of highways numbered 129
• United Nations Security Council Resolution 129