I am sorry if this question is off-topic here. This is not really a question, but more a request to provide examples of un-real numbers.
So far I know only one example that I will put in the list below.
However, to justify this post, I will yet ask this: Would it be correct to say that an un-real number is not a number at all, but rather some kind of concept of a phenomenon that simply doesn't exist in the objective reality?
List of examples of un-real numbers:
Any square root of any negative number;
?