Base 12 has 4 possible final digits
At 1 digits, there were 5 primes, 0 leaders
At 2 digits, there were 12 primes, 1 leaders
At 3 digits, there were 24 primes, 4 leaders
At 4 digits, there were 34 primes, 10 leaders
At 5 digits, there were 32 primes, 9 leaders
At 6 digits, there were 28 primes, 11 leaders
At 7 digits, there were 23 primes, 12 leaders
At 8 digits, there were 13 primes, 7 leaders
At 9 digits, there were 7 primes, 6 leaders
At 10 digits, there were 1 primes, 1 leaders
In total, in base 12 there were 179 primes and 61 leaders, maxlen=10