On the CASIO fx-83gt PLUS factorising is done like this:
- Entering the number,
- press equals,
- SHIFT and ., ,,, (this has “FACT” written above it in yellow).
- The Prime Factor Form is displayed as the answer.
- If the number is Prime, then the number itself is displayed.
This is a natural way to introduce what indices mean, because the CASIO gives the answers in index form eg 34 rather than 3x3x3x3