XNOR in hexadecimal, then decimal

Press and to hex . Type B3, press X nor , the white label above $\displaystyle \pi$ , type 2D, and press : FFFFFFFF61|^:H. That is a complement, a negative number. Press and to decimal to see it in decimal: −159.. Pressing 2nd F and the decimal conversion key is also how you leave the number-base mode.

▶ Watch this step in the video (41:23)