ⓘ 104 (number)


ⓘ 104 (number)

104 is a primitive semiperfect number 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.


1. In other fields

104 is also:

  • Cent Quatre, an arts centre in Paris.
  • The number of guns on Admiral Horatio Nelsons 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.
  • The number of Corinthian columns in the Temple of Olympian Zeus, the largest temple ever built in Greece.