Solved it!
Thank you RetiredCoder for the puzzle, a few more and I can buy a brand new rtx 5090

Should I also put how I managed to solve it?
I suppose you divided the public key by 10 and then brute-forced A, and the rest is history. If A + B + C + D.
1PGRtg6XjiYSB1VJAhsqLQc6hQeBqFGVPD