Etymology

factorable

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Today it means: Capable of being factored. For integers synonyms are composite, non-prime. Full definition →

English factor ← Middle English factour ← Anglo-Norman factour
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The story

  1. Proto-Indo-European*dʰeh₁-
  2. Proto-Indo-European*dʰeh₁k-
  3. Proto-Indo-European*dʰh₁kyéti
  4. Proto-Italic*θakjō
  5. Proto-Italic*fakjō
  6. Latinfaciō
  7. Latinfactor
  8. Middle Frenchfacteur
  9. Latinfactor
  10. Anglo-Normanfactour
  11. Middle Englishfactour
  12. Englishfactor
  13. English todayfactorable

From factor + -able.

Etymology from Wiktionary, CC BY-SA 4.0.