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Miscellaneous Programs and Equations
17–9
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
Program Lines:
(In ALG mode)
Description
>
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.
Checksum and length: 161E 57
Flags Used:
None.
Program Instructions:
1. Key in the program routines; press
Å
when done.
2. Key in a positive integer greater than 3.
3. Press
t
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
?