I created this helper app, it has both the modes, auto or manual/personalized mode. In auto mode it first pick a random number and check if its it is already scanned or not and apply filters, if everything is ok it creates a command and pass it to new cmd and wait for the search to complete. It also has an option to divide the full rane in to multiple parts and search N number of ranges in each parts.
https://postimg.cc/6810xJJLhttps://postimg.cc/w79Mg19gI suggest that you edit your helper code to search all 4 prefixes with the random generated number for (supposedly) higher chances
for example : generate a random hex 45BF0D0E4
search for
445BF0D0E4,
545BF0D0E4,
645BF0D0E4,
745BF0D0E4
With the initial 9 hexadecimal characters, there are 17179869184 starting points.