71503domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers k such that 8*10^k + 6*R_k + 3 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=17A103088Primes that are reached by an ever increasing aliquot sequence.at n=27A234842Prime numbersat n=7083