20369233domain: NPropertiesPrimalityPrimeyesAppears in sequencesIrregular triangle read by rows in which row n lists the prime factors of the duodecimal repunit ((12^n-1)/11). (Written in base 10).at n=34A250210Largest prime factor of 12^n - 1.at n=12A366718Largest prime factor of 12^n - 1.at n=25A366718Prime numbersat n=1292544