Main Page | See live article | Alphabetical index One hundred four (also One hundred and four) (104, CIV) is the natural number following one hundred three and preceding one hundred five. It is a composite number, with its divisors being 2, 4, 8, 13, 26 and 52, and its factorization is: 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. One hundred four is also: The atomic number of rutherfordium. The number of Symphonies written by Joseph Haydn on which numbers are agreed upon (though in fact, he wrote more: see list of symphonies by Joseph Haydn). This article is about the number. For the year AD 104, see 104. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.