Etymology

pseudoprime

P3S1E1U1D2O1P3R1I1M3E1

Today it means: An integer that possesses at least one characteristic of a prime number without actually being prime. The characteristic is typically chosen to make such "false primes" very rare. Full definition →

English prime ← Middle English pseudo- ← Ancient Greek ψευδής (pseudḗs)
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The story

  1. Ancient Greekψεύδω (pseúdō)
  2. Ancient Greekψευδής (pseudḗs)
  3. Middle Englishpseudo-
  4. Englishpseudo-
  5. Englishprime
  6. English todaypseudoprime

From pseudo- + prime.

Etymology from Wiktionary, CC BY-SA 4.0.