228233domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that are concatenations of n with n + 5.at n=23A032628Primes in A075893: Primes of the form (p^2+q^2+r^2)/3, where p,q,r are 3 consecutive primes.at n=19A084951Primes having only {2, 3, 8} as digits.at n=40A260127Prime numbersat n=20278