TypePostAuthorRepliesLast post
Open problemSum of prime and semiprime conjecture princeps26 years 27 weeks ago
Open problemAlexa's Conjecture on Primality princeps79 years 34 weeks ago
Open problem3 is a primitive root modulo primes of the form 16 q^4 + 1, where q>3 is prime princeps110 years 23 weeks ago
Open problemGiuga's Conjecture on Primality princeps010 years 45 weeks ago