104 (number)

← 103 104 105 →
← 100 101 102 103 104 105 106 107 108 109 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
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

104 is a refactorable number and a primitive semiperfect number.

The smallest known 4-regular matchstick graph has 104 edges and 52 vertices, where four unit line segments intersect at every vertex.

The second largest sporadic group $\mathbb {B}$ has a McKay–Thompson series, representative of a principal modular function is $T_{2A}(\tau )$, with constant term $a(0)=104$:

$j_{2A}(\tau )=T_{2A}(\tau )+104={\frac {1}{q}}+104+4372q+96256q^{2}+\cdots$

The Tits group $\mathbb {T}$, which is the only finite simple group to classify as either a non-strict group of Lie type or sporadic group, holds a minimal faithful complex representation in 104 dimensions.

In other fields

104 is also:

• The atomic number of rutherfordium.
• The number of Corinthian columns in the Temple of Olympian Zeus, the largest temple ever built in Greece.
• The number of Symphonies written by Joseph Haydn upon which numbers are agreed (though in fact, he wrote two more: see list of symphonies by Joseph Haydn).

See also

• List of highways numbered 104
• The years 104 BC and AD 104.

References

• Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 133