How is infinity written in numbers?

Answer:
It doesn't have an actual "number" in the alpha-numeric system. Instead, much like pi or square roots it is represented by a symbol which resembles an elongated figure 8 which is laid on its side.

How it actually appears differs greatly based on the font used by the machine creating the text.

Some common appearances can be seen in the link titled Infinity Symbols which has been added underneath this answer.
First answer by ID1364030728. Last edit by WikiAlastor. Contributor trust: 39 [recommend contributor recommended]. Question popularity: 1 [recommend question].