373777domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that contain digits 3 and 7 only.at n=18A020463Lesser of emirps (pairs) with only prime digits (A128388).at n=34A133554n-th prime in the first occurrence of at least n consecutive primes of the form 4k + 1.at n=9A145986Prime numbersat n=31807