- #1

- 19

- 1

## Main Question or Discussion Point

Show that ----> if n is even perfect number than n [tex]\equiv[/tex]6(mod10) or n[tex]\equiv[/tex]8(mod10)

- Thread starter nomather1471
- Start date

- #1

- 19

- 1

Show that ----> if n is even perfect number than n [tex]\equiv[/tex]6(mod10) or n[tex]\equiv[/tex]8(mod10)

- #2

CRGreathouse

Science Advisor

Homework Helper

- 2,820

- 0

Do you know the Euclid-Euler form?

- #3

- 19

- 1

2^(p-1) *(2^p-1) formula i think you have said, i know this formula but i haven't get the result with this.

Last edited:

- #4

- 19

- 1

I can't believe to myself i think i proved :)

http://www.loadtr.com/465992-mmmmm.htm [Broken]

http://www.loadtr.com/465992-mmmmm.htm [Broken]

Last edited by a moderator:

- #5

- 446

- 1

yea. it should be itI can't believe to myself i think i proved :)

http://www.loadtr.com/465992-mmmmm.htm [Broken]

Last edited by a moderator:

- #6

- 19

- 1

it is important point of exponential of 4 is congruence 4 or 6 mod 10, i have missed it i think :)

- Last Post

- Replies
- 6

- Views
- 5K

- Last Post

- Replies
- 18

- Views
- 8K

- Last Post

- Replies
- 2

- Views
- 2K

- Last Post

- Replies
- 10

- Views
- 4K

- Last Post

- Replies
- 9

- Views
- 10K

- Last Post

- Replies
- 9

- Views
- 3K

- Replies
- 1

- Views
- 2K

- Replies
- 6

- Views
- 10K

- Replies
- 3

- Views
- 3K

- Replies
- 8

- Views
- 3K