Why does -2^2 compute to -4 on my HP Prime?

[Joe Horn]

(02-11-2024 11:17 PM)jte Wrote:  Perhaps a hybrid approach would be to treat MOD as a declaration of arithmetic type, similar to how units are handled on the HP Prime. (Once applied, the modulus would carry through to results.)

Prime already does that, using %% syntax in CAS view. Example in CAS: (11111%%777)^22222 --> 100%%777. This is Prime's way of saying "11111^22222 ≡ 100 (mod 777)" as can be verified by performing powmod(11111,22222,777). Once %% notation is included in a calculation, the modulus carries through the calculation.