11111161domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that contain digits 1 and 6 only.at n=26A020454Smallest n-digit prime containing only digits 1 and 6, or 0 if no such prime exists.at n=7A036933Prime numbers with prime sum of any two digits.at n=24A091939Primes whose product of digits is 6.at n=26A107692Prime numbersat n=733414