70223domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes where the first digit equals the sum of all the other digits.at n=40A156307Primes of the form 3*m^2 - 4.at n=32A201716Prime p such that sqrt(p+2) is semiprime (A001358).at n=24A257933Prime numbersat n=6960