> Many student believe that 1 plus the product of the first n primes is always a prime number. Wow, pretty sure I read this in New Scientist magazine in the ea

> Many student believe that 1 plus the product of the first n primes is always a prime number. Wow, pretty sure I read this in New Scientist magazine in the early 2000s, quoting some "cryptography expert". Guess he wasn't such an expert.