the first bidecade of numbers (1-20), there are precisely 8 prime numbers (2,3,5,7,11,13,17,19).
Are there other such bidecades with 8 prime numbers?
The riddle I tell people is long;
They seem to listen well.
For if it's not listened to by them,
They'll see the things I tell.
This might be one expert jest,
Yet friendly to viewers it is;
In this zippy type of poem
The word I wish for is ...