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WikipediaNumber theory

Euler's sum of powers conjecture

Euler's sum of powers conjecture states that for integers n>1n > 1 and k>1k > 1, if the sum of nn positive integers each raised to the kk-th power equals another integer raised to the kk-th power, then nkn ≥ k.

Mathematical statement

Euler's sum of powers conjecture states that for integers n>1n > 1 and k>1k > 1, if the sum of nn positive integers each raised to the kk-th power equals another integer raised to the kk-th power, then nkn ≥ k.

The conjecture is known to be false for k=4k = 4 and k=5k = 5, but remains open for k6k ≥ 6.

Statement source: Wikipedia statement material

Statement terms: CC-BY-SA-4.0

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Statement artifacts, not proofs

These records expose exact Lean propositions and statement-only wrappers. Defining a proposition does not supply a proof of it. A placeholder-bearing target also contains no proof. Elaboration checks syntax and types; it does not certify that a formalization perfectly captures every nuance of the informal problem.

Pinned Lean formulation 1

eulers_sum_of_powers_conjecture

Canonical source
Complete statement target, proof intentionally absentLean 4
theorem eulers_sum_of_powers_conjecture (n k b : ) (hn : 1 < n) (hk : 5 < k) (a : Fin n  )    (ha :  i, a i > 0) (hsum : ∑ i, (a i) ^ k = b ^ k) : k  n := by  sorry
Statement source
Formal Conjectures
Lean version
v4.27.0
Placeholder
Present; no proof artifact
Source evidence
Pinned source index
Fidelity review
Community formulation

References