69955577domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes which are -1 mod m, where m is the index of the prime in sequence A002313 (Real primes with corresponding complex primes). The index m can be found in A084164 Primes which are 1 mod m can be found in sequence A084165.at n=19A084163Prime numbersat n=4115642