MathDB

Erdős Problem #68 — Is ∑n≥21n!−1\sum_{n\geq 2}\frac{1}{n!-1} irrational?

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Is ∑n≥21n!−1\sum_{n\geq 2}\frac{1}{n!-1} irrational?

References

Primary source

ULAM AI, UnsolvedMath dataset, Erdős Problems set, revision b9437975f3c873f635a13c48f8b022f5ba80898a; CC BY 4.0.

Additional references

UnsolvedMath, Erdős Problems set, ULAM AI, licensed CC BY 4.0.

irrationalitynumber-theory
InErdős Problems
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