Let b be a positive integer such that \(b\ge 2\) . In this study, we prove that for a fixed b, there exists only a finite Pell and Pell–Lucas numbers as concatenations of two repdigits in base b. As a corollary, we show that the largest Pell or Pell–Lucas numbers which can be expressible as concatenations of two distinct repdigits in base b with \(2\le b\le 10\) are \(P_{11} = 5741\) and \(Q_{5}=82,\) respectively.
