104 (one hundred [and] four) is the natural number following 103 and preceding 105.
[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
has a McKay–Thompson series, representative of a principal modular function is
, 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.