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Erdős problem 1054

Let f(n)f(n) be the minimal integer mm such that nn is the sum of the kk smallest divisors of mm for some k1k\geq 1. Show that ff is undefined at n=2n=2, i.e. we get the junk value 00.

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Retained declaration

FormalConjectures/ErdosProblems/1054.lean

Formal Conjectures

FormalConjectures/ErdosProblems/1054.leanErdos1054.erdos_1054.parts.i1 lineExact file
sorry ↔ (fun n => ↑(Erdos1054.f n)) =o[Filter.atTop] fun n => ↑n
OpenStatement only, no proof

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  • AI standalone

    Erdős AI contributions wiki · 22-23 Jun, 2026

    Machine
    Claude Opus 4.8, GPT-5.5 Pro, Principia Math
    Open the source record

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