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OMM 2025 Problem 5

    Determina para cuáles enteros positivos n≥3n \geq 3 existen nn números primos, no necesariamente distintos, p1,p2,…,pnp_1, p_2, \ldots, p_n tales que

    p1p2+1,p2p3+1,…,pn−1pn+1 y pnp1+1p_1p_2 + 1, p_2p_3 + 1, \ldots, p_{n-1}p_n + 1 \text{ y } p_np_1 + 1

    son todas potencias perfectas.

    Nota. Una potencia perfecta es un número de la forma aka^k donde aa y kk son enteros positivos con k≥2k \geq 2.

    Official text Mexican Mathematical Olympiad 2025 official paper, page 43. Quoted with source.

    A model read this text from the scan of the paper by OCR, with vision/claude@2.1.318 (claude-opus-5-5). No person has checked it against the paper yet.

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