43271domain: NPropertiesPrimalityPrimeyesAppears in sequencesFibonacci numbers written in base 9.at n=23A004692Numbers k such that (61*10^k - 7)/9 is prime.at n=22A056718a(n) = Fibonacci(n) represented in bijective base-9 numeration.at n=22A282240Prime numbersat n=4516