TypePostAuthorRepliesLast post
Open problemSum of prime and semiprime conjecture princeps21 year 45 weeks ago
Open problemAlexa's Conjecture on Primality princeps75 years 4 days ago
Open problem3 is a primitive root modulo primes of the form 16 q^4 + 1, where q>3 is prime princeps15 years 42 weeks ago
Open problemGiuga's Conjecture on Primality princeps06 years 12 weeks ago