Prime - finding the prime factors of a number using the TI 83/84

Introduction: The prime factors of a positive integer (numbers that can be written without a fractional or decimal component) are the prime numbers that divide into that integer exactly, without leaving a remainder. The process of finding these numbers is called integer factorization, or prime factorization.
This program prfactor.zip (Prime) was written by [Jimmy Salvatore] and referenced by (navyfalcon) e-mail
Note: Click on "prfactor.zip" to download the original program, then "right click" to extract the files and "F10" to load on "VTI".

Related Articles:- PRFactor BPrime Primes

Outline:

Line 2. Clear

Line 4. input number

Line 9. √(number)

Line 14. prime number

Line 15. new number

Line 23. Disp all primes

Reference Cmds

Screenshots

Reference Links

prgmPrime

Line	Command or Statement	Comments
1.	prgmPrime
2.	ClrList ιA	Clear List
3.	DelVar Z
4.	Input A	input number
5.	Lbl A
6.	DelVar C
7.	int(1+sqrt(A->B
8.	2->Y
9.	For(X,Y,B,1	For (variable,begin,end[,increment])
10.	(X=2)+2->Y
11.	If A/X=int(A/X	int( (greatest integer) Note: For a given value, the result of int( is the same as the result of iPart(
12.	Then
13.	X->C
14.	Goto B
15.	End
16.	If C=1
17.	Goto C	Display
18.	End
19.	If C=0
20.	Goto C	Display
21.	Lbl B
22.	A/C->A	new number
23.	Z+1->Z
24.	C->ιA(Z
25.	Goto A
26.	Lbl C	Display routine
27.	Z+1->Z
28.	A->ιA(Z
29.	ιA	Disp all primes

Reference Commands:

TI Basic Commands:

ClrList

DelVar

End Identifies end of For(, If-Then-Else, Repeat, or While loop.

For (variable,begin,end[,increment]) :commands :End :commands :Executes commands through End, incrementing variable from begin by increment until variable end.

If condition :Then :commands :End :commands: Executes commands from Then to End if condition = 1(true).

Goto goes to label specified. Goto requires a line label (Lbl) be implemented as a destination

Input prompts for value to store to variable. Requires user input through keypad.

Int( prompts for value to store to variable. Requires user input through keypad.

Lbl creates a label of one or two characters

Screenshots:

Prim-1	Prim-2	Prim-3	Prim-4	Prim-5

Reference:

Information or Links:

Using the TI-83 graphing calculator tutorial

General Info - Algebra 1 - Statistics 1 - Algebra 2 - Trigonometry - Statistics 2 - PreCalculus - Calculus

http://mathbits.com/mathbits/TISection/Openpage.htm

TI Calc.org TI-83 (Basic) Math Programs

Percent Solver - 48 Math Functions - Math Formulas - Fractions - Decimal to Fraction - Decimal Simplifier - Arithmetic Problem - Ratio Solver - GCD finder

http://www.ticalc.org/pub/83/basic/math/

TI-83 Guidebook

Getting Started has introduced you to basic TI.83 operation. This guidebook. describes in detail the features you used in Getting Started.

http://www.math.oregonstate.edu/home/programs/undergrad/TI_Manuals/ti83Guidebook.pdf

devhardware.com/forums/ti-83-84

TI 83/84, Programming forum discussing coding and everything related to the well-known TI-83/84 graphing calculators for math and science.

http://www.devhardware.com/forums/ti-83-84-102/

TI Calc.org TI-83 (Basic) Math Programs

Percent Solver - 48 Math Functions - Math Formulas - Fractions - Decimal to Fraction - Decimal Simplifier - Arithmetic Problem - Ratio Solver - GCD finder

http://www.ticalc.org/pub/83/basic/math/

Brief Users Guide for the TI-83 Plus

covers basic math, and all basic operations as performed on the TI-83 Plus calculator

http://www.angelfire.com/pro/fkizer/Instructions/tishrtusrguide83.htm

Graphing Calculator Tutorials

Graphing Calculator Help & Tutorials

http://itech.pjc.edu/falzone/handouts/ti83plus_ti84_help_summary.htm