• 제목/요약/키워드: Repdigit

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REPDIGITS AS DIFFERENCE OF TWO PELL OR PELL-LUCAS NUMBERS

  • Fatih Erduvan;Refik Keskin
    • Korean Journal of Mathematics
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    • 제31권1호
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    • pp.63-73
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    • 2023

  • In this paper, we determine all repdigits, which are difference of two Pell and Pell-Lucas numbers. It is shown that the largest repdigit which is difference of two Pell numbers is 99 = 169 - 70 = P7 - P6 and the largest repdigit which is difference of two Pell-Lucas numbers is 444 = 478 - 34 = Q7 - Q4.

  • https://doi.org/10.11568/kjm.2023.31.1.63 인용 PDF