Definition:Keith Number/Historical Note

Historical Note on Keith Numbers
Keith numbers were first introduced by in.

The author coined the name repfigit, but they have since been assigned the name of their creator.

They proved a popular topic, and in $1994$, in Volume $26$, Number $3$ of the, several articles on them appeared.

The number of known Keith numbers is gradually extended, and as of time of writing ($5$th February $2017$) all Keith numbers have been identified up to $10^{29}$.

continues to maintain his webpage on the subject, which can be found at http://www.cadaeic.net/keithnum.htm.