Skewes' number

English

Etymology

Named after South African mathematician Template:W.

Noun

1. Template:Lb Any of several extremely large numbers used as upper bounds for the smallest natural number $x$ for which $\pi (x)>\mathrm{li}(x)$, where $\pi$ is the Template:W and $li$ is the logarithmic integral function. These bounds have since been improved by others.