We conjecture that every prime p ≥ 3 can be written as p = 2p1 − p2, where p1 and p2 are distinct primes; equivalently, every such prime is an endpoint of a non-constant three-term arithmetic progression of primes. A computer search over all primes p with 3 ≤ p ≤ 10^5 found no exception. The statement remains formally unproved.
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Mohammad Mudassir (2026) studied this question.
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