29 (number) in Encyclopedia

29 (number)

Encyclopedia

Tutorials

Videos

Books

Software

DVDs

29 (number)

29 (twenty-nine) is the natural number following 28 and preceding 30.

It is the tenth prime number, and also the fourth primorial prime. It forms a twin prime pair with thirty-one, which is also a primorial prime. Twenty-nine is also the sixth Sophie Germain prime. It is also the sum of three consecutive squares, 2² + 3² + 4². It is a Lucas prime, a Pell prime, and a tetranacci number. It is an Eisenstein prime with no imaginary part and real part of the form 3n - 1. Since 18! + 1 is a multiple of 29 but 29 is not one more than a multiple 18, 29 is a Pillai prime. 29 is also the 10th supersingular prime.

None of the first 29 natural numbers have more than two different prime factors. This is the longest such consecutive sequence.

29 is the aliquot sum of the odd discrete biprimes 115 and 187 and is the base of the 29-aliquot tree.

29 is a Markov number, appearing in the solutions to x^2 + y^2 + z^2 = 3xyz: {2, 5, 29}, {2, 29, 169}, {5, 29, 433}, {29, 169, 14701}, etc.

29 is a Perrin number, preceded in the sequence by 12, 17, 22.

Since the greatest prime factor of 29² + 1 = 842 is 421, which is obviously more than 29 twice, 29 is a St rmer number.

The Bishnois community follows 29 principles. Guru Jambheshwar had laid down 29 principles to be followed by the sect in 1485 A.D. In Hindi, Bish means 20 and noi means 9; thus, Bishnoi translates as Twenty-niners.
The number of suras in the Qur'an that begin with muqatta'at

The atomic number of copper
Messier object M29, a magnitude 9.0 open cluster in the constellation Cygnus
The New General Catalogue object NGC 29, a spiral galaxy in the constellation Andromeda
The lunar month is very close to twenty-nine days.
Saturn requires over 29 years to orbit the Sun
The number of days February has in leap years.

The designation of Interstate 29, a U. S. freeway that runs from Missouri to North Dakota.
In the name of the town Twentynine Palms, California
The number of the French department of Finist re

29th Regiment of Foot, a former regiment in the British Army.
Marine Corps Air Ground Combat Center Twentynine Palms, affectionately referred to by Marines as "Twentynine Stumps".^[4]

"$29.00" is a song on the album Blue Valentine by Tom Waits.
An album by Ryan Adams.
The track from which the Chattanooga Choo Choo train departs in the Glenn Miller song.
The amount of attributes existing according to The Strokes in You Only Live Once.

The Twenty-nine is often used in New Zealand for the missing miners and contractors believed to have been killed in the Pike River Mine disaster in November 2010.

↑ Caroline Finkel, Osman's Dream. New York: Basic Books (2006): xv. "The modern Turkish alphabet has 29 letters, of which three vowels and three consonants are unfamiliar to those who do not know the language, and one consonant is pronounced differently from English."
↑ http://users.jyu.fi/~pamakine/kieli/suomi/aanneoppi/aakkoseten.html
↑ Anthony Ham, Miles Roddis & Graeme Cornwallis, Norway. New York: Lonely Planet (2005): 413. "The modern Norwegian alphabet has 29 letters: those used in English, plus the vowels , and a (which are listed at the end of the alphabet)."
↑ Stephen F. Tomajczyk, To Be a U.S. Marine. New York: Zenith Imprint (2004): 155. "Twenty-nine stumps—Slang for Twenty-nine Palms Marine Corps Air-Ground Combat Center, located in California's Mojave Desert."