HP 33s User Manual page 291

Program Lines:
(In ALG mode)
  
  
  
 
  
  
Checksum and length: 161E 57
Flags Used:
None.
Program Instructions:
1. Key in the program routines; press
2. Key in a positive integer greater than 3.
t
3. Press P to run program. Prime number, P will be displayed.
4. To see the next prime number, press
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 ?
Tests to see whether all possible factors have been tried.
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.
Å
¥
Miscellaneous Programs and Equations
Description
when done.
.
17–9