LBL 'PRIME' ; Key: 25 'PRIME' AVIEW PSE FIX 00 'MAX ?' PROMPT 1 + SQRT STO 04 1 STO 01 3 STO 02 LBL 01 2 ST+ 02 RCL 02 SQRT STO 03 RCL 04 X>Y? GTO 02 RCL 00 STOP LBL 02 2 ST+ 01 RCL 01 RCL 03 X<>Y X<=Y? GTO 03 RCL 02 STO 00 1 STO 01 GTO 01 LBL 03 RCL 02 RCL 01 / FRC X#0? GTO 02 1 STO 01 GTO 01 STOP END