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Erdős problem 364

There is no consecutive triple of powerful numbers.

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3 retained statements36c6d0fef71a

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FormalConjectures/ErdosProblems/

364.lean

Retained formal statement3 of 3

There is no quadruple of powerful numbers, since at least one of the four numbers must be 2(mod4)2 \pmod{4}, which cannot be powerful (since 22 divides it, but 222^2 does not).

FormalConjectures/ErdosProblems/364.leanErdos364.erdos_364.variants.weak1 lineExact file
¬∃ n, n.Powerful ∧ (n + 1).Powerful ∧ (n + 2).Powerful ∧ (n + 3).Powerful
TextbookStatement only, no proof