% ./b36 1 10 1000 1000000 100000000 1000000000
1
         in base 36 = 1
         in base 64 = 1

10
         in base 36 = a
         in base 64 = a

1000
         in base 36 = rs
         in base 64 = fE

1000000
         in base 36 = lfls
         in base 64 = 3Q90

100000000
         in base 36 = 1njchs
         in base 64 = 5Zu40

1000000000
         in base 36 = gjdgxs
         in base 64 = XCIE0