The mathematician Duro Kurepa defined for and conjectured that for all . This conjecture has been verified by Ivic and Mijajlovic for . Write a program in C or C++, or even MATLAB, Maple, or Mathematica or Scilab showing that this conjecture is true up to .

*I will surely share more programming pearls in number theory here.*

Nalin Pithwa

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Can you please share the source of this conjecture?

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A. Ivic, and Z. Mijajlovic. On Kurepa’s problems in number theory, Publ. Inst. Math (Belgrade), 55, (1995), 19-28

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Thanks! Found the paper (https://arxiv.org/abs/math/0312202), it’s called “left factorial hypothesis”.

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