104 (number)

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

In mathematics

104 is a refactorable number<ref>Template:Cite OEIS</ref> and a primitive semiperfect number.<ref>Template:Cite OEIS</ref>

The smallest known 4-regular matchstick graph has 104 edges and 52 vertices, where four unit line segments intersect at every vertex.<ref>Template:Cite journal</ref>

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

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

The Tits group <math>\mathbb {T}</math>, 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.<ref>Template:Cite journal</ref>

References

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

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