3131311domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes > 1000 in which every substring of lengths 2 and 3 are also prime.at n=30A069490Primes formed by concatenating n, n, n, and 1 for n = 1, 2, 3,....at n=9A210712Primes whose sum of decimal digits has the same set of decimal digits as the prime.at n=27A360986Prime numbersat n=225605