Problem calculating an expression with roots

[Han]

(02-02-2015 08:20 PM)Snorre Wrote:  Somehow "expln" seems to be special on my Prime (both device and emulator).
If I enter "expln+0" within CAS I get "101". Entering "expln" alone yields "expln" as for every other unknown variable. But in conjunction with an addition, subtraction, multiplication or power it behaves like if it was 101.
Why is that?

This doesn't answer your question, but a similar behavior exists for 'list' (whose value seems to be 256)