Base 6 has 2 possible final digits
At 1 digits, there were 3 primes, 0 leaders
At 2 digits, there were 5 primes, 1 leaders
At 3 digits, there were 6 primes, 0 leaders
At 4 digits, there were 8 primes, 1 leaders
At 5 digits, there were 9 primes, 5 leaders
At 6 digits, there were 4 primes, 3 leaders
At 7 digits, there were 1 primes, 1 leaders
In total, in base 6 there were 36 primes and 11 leaders, maxlen=7