104 (number)

104 is the natural number following 103 and preceding 105.

In mathematics

One hundred four is a primitive semiperfect number and 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.

In other fields

104 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).
• The year AD 104 or 104 BC.

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