Number 29

A page of the Numeropedia - the Special Encyclopedia of Numbers

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[Calendar]  The number of full days in February of a leap year.

 

[Calendar]  The number of full days (29 or 30) in a month in the Chinese lunar (or lunisolar) year. The exact number: 29 days 12 h 44 m and 2.89 s or 29.530589 days.

 

[Chemistry]  The atomic number of Cooper (Cu).

 

[Geology]  U.S. cities/towns whose names start with “Twentynine”: Twentynine Palms, California 92277 and 92278 and Twentynine Palms Base, California 92278.

 

[History]  Iowa became the 29th state of the U.S. on 28 December 1846.

 

[History]  The 29th U.S. President: Warren Gamaliel Harding (Republican, Ohio, 1921-1923).

His Vice President, Calvin Coolidge (Vermont), was the 29th U.S. Vice President.

 

[Language]  The number of letters in the longest non-medical English word (listed in Oxford English dictionary, first edition) whose meaning is the act of estimating something as worthless: Floccinaucinihilipilification.

 

[Language]  The number of letters in the Norwegian alphabet: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, Æ, Ø and Å.

 

[Language]  The number of letters in the Finnish alphabet: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, Å, Ä and Ö. (Å is only in Swedish loanwords).

 

[Language]  The number of letters in the Swedish alphabet: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, Å, Ä and Ö. (Q was eliminated and replaced by K, except in proper name; W is usually replaced by V; and Z is only in foreign loan words.)

 

[Language]  The number of main (single) letters in the Vietnamese alphabet: A, Â, Ǎ, B, C, D, Ð, E, Ê, G, H, I, K, L, M, N, O, Ô, Ơ, P, Q, R, S, T, U, Ư, V, X and Y. Vowels: A, Â, Ǎ, E, Ê, I, O, Ô, Ơ, U, Ư and Y. Eight double-letter consonants: Ch, Gh, Kh, Ng, Nh, Ph, Th and Tr. One triple-letter consonant: Ngh.

 

[Math.]  A right-truncatable prime number.

 

[Math.]  The 7th Lucas number.

 

[Math.]  The 2nd square number that is the sum of squares of 2 consecutive numbers: 841 = 292 = 202+212. Each root number in the series is 6 times the previous root number minus the earlier root number: 1, 52, 292, 1692, 9852

Or in other words:  (20, 21, 29) is the 2nd Pythagorean triple (lengths of 3 sides of a right triangle), where 2 sides are consecutive integers.

 

[Math.]  14,368,485 = 3×5×17×29×29×67, using each of 9 digits 1-9 twice.

 

[Math.]  A near miss to Fermat’s Last Theorem: 1,419,869 = 135+165 = 175+12 and 13+16 = 17+12 = 29.

 

[Math.]  A supersingular prime numbers factors of the order of the Monster group M: 246×320×59×76×112×133×17×19×23×29×31×41×47×59×71 = 808017424794512875886459904961710757005754368000000000.

 

[Math.]  The first Markov numbers are 1, 2, 5, 13, 29, 34, 89, 169, 194, 233…

 

[Theology]  Jesus Christ was crucified in the year 29 A.D at the age of 33.

 

[Trivia]  The English capital word “TWENTY NINE” is written in exactly 29 strokes, if Y is normally written in 3 strokes. Maybe the only such case.

 

[Zip]  The values of the US non-denominated first-class postage stamps and later values, for the first ounce, starting 14 September 1975 at 10¢ to 44¢, in May 2009.  

Series

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A

B

C

D

E

F

G

H

 *

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 *

 *

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Value (¢)

10

13

15

18

20

22

25

29

32

33

34

37

39

41

42

44

 

29.27 - 29.84

[Astronomy]  The average number of days between 2 new moons; (between 29.27 to 29.84 days)

 

29.5

[Sport]  The circumference of a professional basketball: 29.5 to 30 inches.

 

29.5735

[Measure]  1 fluid ounce = 29.5735 ml (milliliters).

U.S. customary units for liquid measures: 1 gallon = 4 quarts = 8 pints = 32 gills = 128 fluid ounces = 1024 fluid drams = 61440 minims = 3.785411784 liters = 231 inch3.

 

29.921

[Measure]  The standard atmospheric pressure at sea level is 1 atm (atmosphere) = 1,013.25 millibars = 29.921 inches of mercury (inHg).

Units for pressure measures: 1 atm (atmosphere) = 1013.25 millibars = 101,325 N/m2 (pascals) = 1033.227 g/cm2 = 10,332.27 kg/m2 = 760 mmHg (torrs) = 29.921 inHg = 14.696 lb/inch2 (psi) & 1 bar = 105 N/m2 (pascals) = 106 dynes/cm2 (cgs bars).