Where does “repdigit” come from?

repdigit (English) comes from English digit, from Middle English digit, from Latin digitus, from Proto-Indo-European deyḱ- — to point out.

repdigit (English): A number composed only of one or more occurrences of one specific digit and no other digit

Definitions

  1. A number composed only of one or more occurrences of one specific digit and no other digit

Ancestry of “repdigit”, step by step

repdigit traces back through two separate lines of ancestry.

via English digit

StepLanguageWordMeaning
1EnglishdigitThe whole numbers from 0 to 9 and the Arabic...
2Middle Englishdigitdigit
3Latindigitusa finger, toe, digit; a twig
4Proto-Indo-Europeandeyḱ-to point out

via English repeated

StepLanguageWordMeaning
1Englishrepeatedsimple past tense and past participle of repeat;...
Every word from Proto-Indo-European deyḱ-Every word from Latin digitusEvery word from Middle English digit
repdigit — Etymology, Origin & Word History | Etymology Explorer