178601domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 3*m^2 - 7.at n=34A201718Prime p such that p and p+2 are twin primes and p^2+p-1 p^2+p+1 are also twin primes.at n=30A228968Artiads (A001583) congruent to 1 mod 50 and having 2 as a quintic residue.at n=28A270799Prime numbersat n=16211