10553829domain: NAppears in sequencesNumbers n such that prime(n) == -1 (mod n).at n=29A045924Numbers k that divide the average of prime(k) and prime(k+1).at n=19A066706Numbers k such that k divides prime(k) + prime(k+1).at n=32A066895Numbers k such that prime(k+1) == 1 (mod k).at n=31A105286