29 (number) Guide, Meaning , Facts, Information and Description
29 (twenty-nine) is the natural number following 28 and preceding 30.
| Cardinal | twenty-nine |
| Ordinal | twenty-ninth |
| Factorization | prime |
| Roman numeral | XXIX |
| Binary | 11101 |
| Hexadecimal | 1D |
In mathematics
It is the tenth prime number, and also a primorial prime, the next prime number as well as primoral prime being thirty-one, with which it comprises a twin prime. Twenty-nine is also a Sophie Germain prime. It is also the sum of three squares, 22 + 32 + 42. It is a Lucas number, a Pell number and a tetranacci number.
In other fields
The lunar month is very close to twenty-nine days.
Twenty-nine is:
- The atomic number of copper.
- The number of days February has on leap years.
- The number of letters in the Finnish and Norwegian alphabets.
- The designation of Interstate 29, a freeway that runs from Missouri to North Dakota.
- In the name of the town Twentynine Palms, California, also the name of the adjoining Marine Corps base, affectionately referred to by Marines as "Twentynine Stumps".
- Historical years: 29 A.D., 29 B.C, or 1929
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