integer constants. Are there some examples of mathematocal constants which are integer numbers. I know of one that is called Kaprekars constant but thats just a base 10 curiosity. Aret there some more important examples? perhaps in the fields of combinatorics or abstract algebra? Thanks. It would be optimal if it where 4 digits long.

Integer constants: what do you want?

* The binomial-coeffcients?
* The Stirling numbers?
* The Eulerian numbers?
* The Bell numbers?



Transcendent numbers?

* $\pi$ ?
* e (=exp(1))?



Is that really your question?

* * *

Ok, another try after your comment:

* 11 - the first prime _p_ such that the mersenne number $2^p - 1$ is not prime?
* Graham's numbers?



* * *