TypePostAuthorRepliesLast post
Open problemSum of prime and semiprime conjecture princeps22 years 41 weeks ago
Open problemAlexa's Conjecture on Primality princeps75 years 48 weeks ago
Open problem3 is a primitive root modulo primes of the form 16 q^4 + 1, where q>3 is prime princeps16 years 38 weeks ago
Open problemGiuga's Conjecture on Primality princeps07 years 7 weeks ago