647753domain: NPropertiesPrimalityPrimeyesAppears in sequencesLargest prime factor of 9^n + 1.at n=14A002592Largest prime factor of 9^(2n)+1 (A063270).at n=7A063271Largest prime factor of 3^n + 1.at n=28A074476Largest prime factor of 9^n - 1.at n=27A274909Prime numbersat n=52657