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Erdős problem / erdos

no open offer

Problem 273

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  1. vf_4312fe0bfccbf4bd

    theoretical

    Erdős Problem #273: declared status 'open'. Formalized: yes. Is there a covering system all of whose moduli are of the form p−1p-1 for some primes p≥5p\geq 5? Prize: no. Tags: covering systems, number theory.

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