1.2411 trillion digits (1,241,100,000,000) digits of pi have been dicovered.
Possible... There could be elements in the Earth's crust that have not been discovered yet.
False they invisible, and they can't been seen
Because that is what a conjecture is! It is a proposition that has to be checked out to see f it isalways true, false or indeterminate,sometimes true, false or indeterminate,never true, false or indeterminate.Once its nature has been decided then it is no longer a conjecture.