Raj Pratap Singh

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On Giuga numbers

Nov 3, 2023

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If $p_1$ and $p_2$ are prime numbers, then either $p_1$ divides $\sum_{i=1}^{p_1-1} i^{p_1p_2-1}$ or $p_2$ divides $\sum_{i=1}^{p_2-1} i^{p_1p_2-1}$?

Oct 31, 2023

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