223423domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes having only {2, 3, 4} as digits.at n=34A199342Smallest prime that is the (sum, k*prime(k),k=m,..n+m-1) for some m, or 0 if no such m exists.at n=28A268467Primes whose second, third and fourth digits are 234.at n=23A371833Prime numbersat n=19896