# asymptotic families of ramanujan near-integers?

This is a follow-up to the question on the Ramanujan constant.

Can one find an asymptotic family of shockingly near-integers obtained by raising e to some simple algebraic number, in the spirit of Ramanujan's $|\exp(\pi \sqrt{163}) - \text{ some integer }| \le 10^{-12}$? Single numerical coincidences don't impress me (and for good reason too ...).

Is there a sequence of such near-integers, whose nearness to integers is closer than what you know exists by pigeonholing exp(alpha) for all alpha of bounded "height" or "complexity"?

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## 1 Answer

The Ramanujan behavior is typically explained by the fact that the imaginary quadratic field $\mathbb{Q}(\sqrt{-163})$ has class number one (together with an integrality property of the j-function - see Wikipedia). Since there are only finitely many such imaginary quadratic fields, you can't really expect to have infinitely many similar phenomena (at least admitting a similar explanation).

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