Ans

[Eduardo Silveira]

Hi guys, Prime is new for me, but I think we have a bug or a weird Ans/ stack implementation (please, forgive me if this is stupid, I couldn’t find anything about it) … so, try the follow sequence in CAS mode:
[1]
[Enter]
[2]
[Enter]
[Del]
[Del]
[+]
[1]
[Enter]
And I would expect 2 as result, not 3. If this is not an issue, it is weird, different from other calcs, and inconsistent with other operations like the Simplify (Shortcut). Please let me know your thoughts.