104 (number)
| ||||
|---|---|---|---|---|
| Cardinal | one hundred four | |||
| Ordinal | 104th (one hundred fourth) | |||
| Factorization | 23 × 13 | |||
| Divisors | 1, 2, 4, 8, 13, 26, 52, 104 | |||
| Greek numeral | ΡΔ´ | |||
| Roman numeral | CIV | |||
| Binary | 11010002 | |||
| Ternary | 102123 | |||
| Senary | 2526 | |||
| Octal | 1508 | |||
| Duodecimal | 8812 | |||
| Hexadecimal | 6816 | |||
104 (one hundred [and] four) is the natural number following 103 and preceding 105.
In mathematics[edit]
104 is a primitive semiperfect number[1] and a composite number, with its divisors being 1, 2, 4, 8, 13, 26, 52 and 104. As it has 8 divisors total, and 8 is one of those divisors, 104 is a refactorable number. The distinct prime factors of 104 add up to 15, and so do the ones of 105, hence the two numbers form a Ruth-Aaron pair under the first definition.
In regular geometry, 104 is the smallest number of unit line segments that can exist in a plane with four of them touching at every vertex.
A figure made up of a row of 4 adjacent congruent rectangles is divided into 104 regions upon drawing diagonals of all possible rectangles.[2]
φ(104) = φ(σ(104)).[3]
In science[edit]
- The atomic number of rutherfordium.
- Number of degrees Fahrenheit corresponding to 40 Celsius.
In other fields[edit]
104 is also:
- The number of Corinthian columns in the Temple of Olympian Zeus, the largest temple ever built in Greece.
- The number of guns on Admiral Horatio Nelson's flagship HMS Victory.
- The number of keys on a standard Windows keyboard.
- The number of Symphonies written by Joseph Haydn upon which numbers are agreed (though in fact, he wrote more: see list of symphonies by Joseph Haydn).
- Cent Quatre, an arts centre in Paris.
See also[edit]
References[edit]
- Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 133
- ^ "Sloane's A006036 : Primitive pseudoperfect numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-27.
- ^ "A306302- OEIS". oeis.org. Retrieved 2022-05-09.
- ^ Sloane, N. J. A. (ed.). "Sequence A006872". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.