Prime Factorization - Sharp EL-9900C User Manual

PRIME FACTORIZATION

1. Program the calculator to find the prime factorization of a whole number
greater than 2. This method decomposes a number into the prime factors
2, 3, 5, etc.
2. Create a new program with the name DECOMP. Enter the following program
and remember to press ENTER at the end of each line. If you make a
mistake, use the calculator's editing features to correct the error.
3. Enter the following program using the Advanced Keyboard:
Input N
2⇒D
Label A
÷
If (N D) = int
÷
(N D) Goto B
D+1⇒D
If D ≤ √N Goto A
Goto C
Label B
÷
N D⇒N
Print D
Goto A
Label C
Print N
End
Press 2ndF
Basic Keyboard/PROGRAMMING USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
PRGM A
2 STO ALPHA
PRGM B
PRGM B
ALPHA D
(
ALPHA
PRGM B
ALPHA D
ENTER
PRGM B
F 6 2ndF
B 0 2
PRGM B
PRGM B
ALPHA N
N ENTER
PRGM A
PRGM B
PRGM B
PRGM A
PRGM A
QUIT to exit the editor.
3 ALPHA N ENTER
D ENTER
0 1 ALPHA A
(
0 3 ALPHA
)
ALPHA =
÷
N ALPHA D
0 2 ALPHA B
+
1 STO ALPHA
0 3 ALPHA D
√
ALPHA N
ALPHA A ENTER
0 2 ALPHA C
0 1 ALPHA B
÷
ALPHA D
1 ALPHA D ENTER
0 2 ALPHA A
0 1 ALPHA C
1 ALPHA N ENTER
6 ENTER
3
ENTER
÷
N
MATH B 0 5
)
ENTER
D
MATH
PRGM
ENTER
ENTER
STO ALPHA
ENTER
ENTER