389658domain: NAppears in sequencesa(n) is the least number whose fifth power is an n-digit fifth power which has the maximum sum of digits (A374025(n)).at n=27A379650a(n) = k is the largest k for which k^5 is n digits long and the sum of digits of k^5 is the maximum for any n digit 5th power (A374025).at n=27A380566