104 (number)
Encyclopedia
104 is the natural number
following 103
and preceding 105
.
and a composite number
, with its divisor
s 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
.
Natural number
In mathematics, the natural numbers are the ordinary whole numbers used for counting and ordering . These purposes are related to the linguistic notions of cardinal and ordinal numbers, respectively...
following 103
103 (number)
103 is the natural number following 102 and preceding 104.-In mathematics:One hundred [and] three is the 27th prime number. The previous prime is 101, making them both twin primes...
and preceding 105
105 (number)
105 is the natural number following 104 and preceding 106.-In mathematics:105 is a triangular number, a 12-gonal number and a Zeisel number. It is a sphenic number, and is the product of three consecutive prime numbers. 105 is the double factorial of 7...
.
In mathematics
One hundred [and] four is a primitive semiperfect numberPrimitive semiperfect number
In number theory, a primitive semiperfect number is a semiperfect number that has no semiperfect proper divisor....
and a composite number
Composite number
A composite number is a positive integer which has a positive divisor other than one or itself. In other words a composite number is any positive integer greater than one that is not a prime number....
, with its divisor
Divisor
In mathematics, a divisor of an integer n, also called a factor of n, is an integer which divides n without leaving a remainder.-Explanation:...
s 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
Refactorable number
A refactorable number or tau number is an integer n that is divisible by the count of its divisors, or to put it algebraically, n is such that \tau|n. The first few refactorable numbers are listed in 1, 2, 8, 9, 12, 18, 24, 36, 40, 56, 60, 72, 80, 84, 88, 96...
. 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
Ruth-Aaron pair
In mathematics, a Ruth–Aaron pair consists of two consecutive integers for which the sums of the prime factors of each integer are equal:andIf only distinct prime factors are counted, the first few Ruth–Aaron pairs are:...
under the first definition.
In regular geometry
Geometry
Geometry arose as the field of knowledge dealing with spatial relationships. Geometry was one of the two fields of pre-modern mathematics, the other being the study of numbers ....
, 104 is the smallest number of unit line segments that can exist in a plane with four of them touching at every vertex
Vertex (geometry)
In geometry, a vertex is a special kind of point that describes the corners or intersections of geometric shapes.-Of an angle:...
.
In science
- The atomic numberAtomic numberIn chemistry and physics, the atomic number is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus. It is conventionally represented by the symbol Z. The atomic number uniquely identifies a chemical element...
of rutherfordiumRutherfordiumRutherfordium is a chemical element with symbol Rf and atomic number 104, named in honor of New Zealand physicist Ernest Rutherford. It is a synthetic element and radioactive; the most stable known isotope, 267Rf, has a half-life of approximately 1.3 hours.In the periodic table of the elements,...
. - Number of degrees Fahrenheit corresponding to 40 Celsius.
In other fields
104 is also:- The number of Corinthian columns in the Temple of Olympian ZeusTemple of Olympian ZeusThe Temple of Olympian Zeus , also known as the Olympieion or Columns of the Olympian Zeus, is a colossal ruined temple in the centre of the Greek capital Athens that was dedicated to Zeus, king of the Olympian gods...
, the largest temple ever built in GreeceGreeceGreece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....
. - The number of guns on Admiral Horatio Nelson's flagship HMS VictoryHMS VictoryHMS Victory is a 104-gun first-rate ship of the line of the Royal Navy, laid down in 1759 and launched in 1765. She is most famous as Lord Nelson's flagship at the Battle of Trafalgar in 1805....
. - The number of Symphonies written by Joseph HaydnJoseph HaydnFranz Joseph Haydn , known as Joseph Haydn , was an Austrian composer, one of the most prolific and prominent composers of the Classical period. He is often called the "Father of the Symphony" and "Father of the String Quartet" because of his important contributions to these forms...
on which numbers are agreed upon (though in fact, he wrote more: see list of symphonies by Joseph Haydn).