449699domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes having only {4, 6, 9} as digits.at n=32A107666Prime numbers for which the sum of reciprocals of nonzero digits equals 1.at n=25A239685Primes p, with k digits, such that the Sum_{i=1..k} (p without its i-th digit)/(its i-th digit) is a prime.at n=13A346206Prime numbersat n=37686