Back to Problems

erdos_68

Specification

Is $$\sum_{n=2}^\infty \frac{1}{n!-1}$$ irrational?

Actions

Submit a Proof

Have a proof attempt? Submit it for zero-trust verification.

Submit Proof
Lean 4 Statement 
theorem erdos_68 :
    answer(sorry) ↔ Irrational (∑' n : ℕ, 1 / ((n + 2).factorial - 1 : ℝ))
ID: ErdosProblems__68__erdos_68
Browse 300 unsolved math conjectures formalized in Lean 4
Browse

All Problems

Explore all 300 unsolved conjectures.

View problems →
ASI Prize documentation for formal verification pipeline
Docs

Verification Pipeline

How zero-trust verification works.

Read docs →
Evaluation Results

Recent Submissions

No submissions yet. Be the first to attempt this problem.