HP 32SII

Miscellaneous Programs and Equations 17–9
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
Program Lines: Description
% ! &
If all factors have been tried, branches to the display
routine.
% 
Calculates the next possible factor, D + 2.
% !- 
% ! %
Branches to test potential prime with new factor.
Checksum and length: 061F 021.0
Flags Used:
None.
Memory Required:
61 bytes: 45 for program, 16 for variables.
Program Instructions:
1. Key in the program routines; press

when done.
2. Key in a positive integer greater than 3.
3. Press
W
P to run program. Prime number, P will b e displayed.
4. To see the next prime number, press
f
.
Variables Used:
P Prime value and potential prime values.
D Divisor used to test the current value of P.
Remarks:
No test is made to ensure that the input is greater than 3.
Example.
What is the first prime number after 789
?
What is the next prime number
?
Keys: Display: Description: