21 Is Not Prime Logic

you say "21 is not prime". but that's what you'd conclude if you thought 2*11=21. therefore, you think 2*11=21. and that's not true. and therefore, 21 is prime

The meme is a screenshot of a social media post presenting deliberately circular and incorrect arithmetic logic about whether 21 is prime. The punchline is that treating the false equation 2*11=21 as a premise supposedly leads to the absurd conclusion that 21 is prime, mocking flawed reasoning and mathematical illiteracy.

• @memetutorial / 21165 2026-09-19