129 (number)
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129 (one hundred [and] twenty-nine) is the natural number following 128 and preceding 130.
| 129 | |
|---|---|
| Cardinal | one hundred [and] twenty-nine |
| Ordinal | 129th (one hundred [and] twenty-ninth) |
| Numeral system | 129 |
| Factorization |  |
| Divisors | 1, 3, 43, 129 |
| Roman numeral | CXXIX |
| Binary | 100000012 |
| Octal | 2018 |
| Duodecimal | A912 |
| Hexadecimal | 8116 |
Contents |
[edit] 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: 112 + 22 + 22, 102 + 52 + 22, 82 + 82 + 12, and 82 + 72 + 42.
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.
[edit] 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
- 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
[edit] In transportation
- U.S. Route 129 runs from Knoxville, Tennessee to Chiefland, Florida
- M-129 is a Michigan highway
- Highway 129 is a provincial highway in Ontario, Canada
- 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
[edit] 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
- 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
