Base 28 has 12 possible final digits
At 1 digits, there were 9 primes, 0 leaders
At 2 digits, there were 43 primes, 0 leaders
At 3 digits, there were 143 primes, 4 leaders
At 4 digits, there were 345 primes, 33 leaders
At 5 digits, there were 638 primes, 107 leaders
At 6 digits, there were 975 primes, 218 leaders
At 7 digits, there were 1236 primes, 320 leaders
At 8 digits, there were 1420 primes, 468 leaders
At 9 digits, there were 1411 primes, 564 leaders
At 10 digits, there were 1226 primes, 519 leaders
At 11 digits, there were 982 primes, 443 leaders
At 12 digits, there were 755 primes, 392 leaders
At 13 digits, there were 475 primes, 255 leaders
At 14 digits, there were 289 primes, 150 leaders
At 15 digits, there were 179 primes, 93 leaders
At 16 digits, there were 108 primes, 63 leaders
At 17 digits, there were 51 primes, 37 leaders
At 18 digits, there were 16 primes, 6 leaders
At 19 digits, there were 11 primes, 7 leaders
At 20 digits, there were 6 primes, 5 leaders
At 21 digits, there were 1 primes, 1 leaders
In total, in base 28 there were 10319 primes and 3685 leaders, maxlen=21