TypePostAuthorRepliesLast post
Open problemSum of prime and semiprime conjecture princeps21 year 16 weeks ago
Open problemAlexa's Conjecture on Primality princeps74 years 23 weeks ago
Open problem3 is a primitive root modulo primes of the form 16 q^4 + 1, where q>3 is prime princeps15 years 13 weeks ago
Open problemGiuga's Conjecture on Primality princeps05 years 34 weeks ago