@MartinSleziak This is an example of the situation I mentioned above. A question posted today has 500 views and 8 answers. The attention was probably mainly due the appearance on hon network questions list. There is an older duplicate question, however, it did not attract too many views and only has two answers.

How could I show that if $a$ is an integer, then $a^3 \equiv 1, 0, 6 \mod 7$? $\to$ Prove: "The cube of any number not a multiple of 7, will equal one more or one less than a multiple of 7"