104 (number)

104 (one hundred [and] four) is the natural number following 103 and preceding 105.

← 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, civ
Binary	11010002
Ternary	102123
Senary	2526
Octal	1508
Duodecimal	8812
Hexadecimal	6816

In mathematics

104 is a refactorable number^[1] and a primitive semiperfect number.^[2]

The smallest known 4-regular matchstick graph has 104 edges and 52 vertices, where four unit line segments intersect at every vertex.^[3]

The second largest sporadic group ${\displaystyle \mathbb {B} }$ has a McKay–Thompson series, representative of a principal modular function is ${\displaystyle T_{2A}(\tau )}$, with constant term ${\displaystyle a(0)=104}$:^[4]

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

The Tits group ${\displaystyle \mathbb {T} }$, 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.^[5]