Casio fx-9750G PLUS - Manual (Page 440)

412
PROGRAM SHEET
Program for
Prime Factor Analysis
Description
Produces prime factors of arbitrary positive integers
For 1 < m < 10 10
Prime numbers are produced from the lowest value first. “END” is displayed at the
end of the program.
(Overview)
m is divided by 2 and by all successive odd numbers ( d = 3, 5, 7, 9, 11, 13, ....) to
check for divisibility.
Where
d is a prime factor, m
i
= m
i –1
/ d is assumed, and division is repeated until
m
i
+ 1 < d .
Example
[1]
119 = 7
Ч 17
[2]
440730 = 2
Ч 3 Ч 3 Ч 5 Ч 59 Ч 83
[3]
262701 = 3
Ч 3 Ч 17 Ч 17 Ч 101
Preparation and operation
• Store the program written on the next page.
• Execute the program as shown below.
Step Key operation Display Step Key operation Display
No.
1