Catalan-Dickson Conjecture/Historical Note

Historical Note on Catalan-Dickson Conjecture
first made this conjecture in $1888$.

It was refined in $1913$ by.

independently came up with the concept of aliquot sequences in $1918$, and famously made the same conjecture:

expresses the opinion, based on heuristic and experimental evidence, that there may exist some aliquot sequences which are unbounded.