Big Bang Theory Quote
Howard: Wha the hell is 43?
Raj: It's a prime number. Encryption systems are based on prime numbers.
Howard: What kind of secrets would Sheldon need encrypting?
Raj: Maybe it's the secret to what makes his egg salad so delicious.
Howard: It's paprika.
Raj: Really? Well, one mystery solved.
Quote from S06E08 - The 43 Peculiarity