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Perfect Numbers

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perfect1.zip
Filename perfect1.zip (Download)
Title Perfect Numbers
Description The first seven perfect numbers are: 6, 28, 496, 8128, 33550336, 8589869056, and 137438691328. There are presently 47 known such numbers, wich are defined by the fact that the sum of their divisors is twice the number itself. For example 6 has the divisors: 1, 2, 3, 6, wich adds up to 12. There is for now no known odd number that is perfect. But it has been proven that it has to be bigger than 10^300, if it exists. All even perfect numbers are on the form: 2^(p-1)(2^p-1), where p and 2^p-1 are prime numbers. I have made four small programs to demonstrate these numbers.
Author Anders Tiberg (anders.tiberg@telia.com)
Category TI-83/84 Plus BASIC Math Programs (Arithmetic)
File Size 2,590 bytes
File Date and Time Wed Mar 31 21:50:33 2010
Documentation Included? Yes

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ARCHIVE CONTENTS

Archive Contents
Name Size
PERFECT TI-83 Plus.8xp   239
PERFECT.rtf   2094
PERFECT1 TI-83 Plus.8xp   349
PERFECT2 TI-83 Plus.8xp   346
PERFECT3 TI-83 Plus.8xp   275

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