TypePostAuthorRepliesLast post
Open problemSum of prime and semiprime conjecture princeps23 years 25 weeks ago
Open problemAlexa's Conjecture on Primality princeps76 years 32 weeks ago
Open problem3 is a primitive root modulo primes of the form 16 q^4 + 1, where q>3 is prime princeps17 years 22 weeks ago
Open problemGiuga's Conjecture on Primality princeps07 years 43 weeks ago