111871domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p with p-1, p+1, prime(p)-1 and prime(p)+1 all practical.at n=15A257924Primes which are the decimal concatenation of 1, a prime, and 1.at n=37A270237Prime numbers p such that p - 2, p^2 - p - 1, p^2 - p + 1 are prime numbers.at n=22A274525Prime numbersat n=10611