Tutoring high school math, the prime factorization is a topic. The tutor shows the convenient prime factorization function on the Casio fx-991ES PLUS C.

Example: using the Casio fx-991ES PLUS C, find the prime factorization of 225.

Solution:

1. Make sure the calculator is in COMP mode by pressing MODE then 1
2. Key in 225 then =
3. Press Shift, then °'”

HTH:)

Source:

Casio fx-991ES PLUS C User’s Guide.

Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.