Erdős Problem #376 — Are there infinitely many $n$ such that $\binom{2n}{n}$ is coprime to $105$ ?

At least 45 years old · documented by 1980

Are there infinitely many $n$ such that $\binom{2n}{n}$ is coprime to $105$ ?

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.

base-representations binomial-coefficients number-theory

InErdős Problems

Posted 1 month ago · edited 3 weeks ago

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