large enough prime value and it's non-trivial zero point compute

let (10^23-1)/9=e^(50.7622) was a odd prime number,when tx=e^(21.182),it was easy to compute x=e^(50.762) was a sufficiently large odd prime number,for example ,prime number 15485863=tn,9999943=tx,here x=21135996 positive integers, when tp=7496898.803=e^(15.83),we also have here prime number was p=15485836,p=82589933 was a largest known mersenne 51 number, tx=82589933,we have x=202315332