Problem

erdos:479

sorry ↔ ∀ k > 1, {n | 2 ^ n ≡ k [MOD n]}.Infinite

Open Current State

Declared status: open
Formalization: formalized
Subjects: number theory
OEIS: A036236 · A015919 · A050259 · A015921 · A006521 · A006517 · A015940
Sources: source:erdos-problemssource:formal-conjectures
Statement: www.erdosproblems.com

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