93529domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that x^54 = 2 has no solution mod p, but x^18 = 2 has a solution mod p.at n=27A059666Prime numbers which can be expressed as the sum of two numbers, one of which is the rotationally ambigrammatic transformation of the other excluding leading zeros.at n=14A340054Prime numbersat n=9033