repunit

See also: repunît

English

Etymology

Blend of rep(eated) +‎ unit.

Noun

repunit (plural repunits)

  1. A repdigit consisting only of one or more occurrences of the digit 1.
    11, 111, and 1,111 are repunits.
    • 1991, Paulo Ribenboim, The Little Book of Big Primes‎[1], page 172:
      The only known prime repunits are R2, R19, R23, and more recently R317 (discovered by Williams in 1978) and R1031 (discovered by Williams & Dubner in 1986). Moreover, Dubner has determined that for every other prime p less than 10000, the repunit Rp is composite.

Hypernyms

Anagrams

French

Pronunciation

  • IPA(key): /ʁə.py.ni/

Verb

repunit

  1. inflection of repunir:
    1. third-person singular present indicative
    2. third-person singular past historic
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