Talk:Senary

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Contents 1 hands 2 prime numbers 3 errors 4 big errors 5 consistency errors

[edit] hands

What does:

Base 6 can be counted on hands by using each hand as a digit (0 to 5).

mean? I assume the second 'hand' is a mistake. Tompagenet 10:33, 5 Aug 2003 (UTC)

It was probably a presumption that you count 1-6 instead of 0-5... Dysprosia 10:34, 5 Aug 2003 (UTC)

What is probably meant is: Take your right hand, close it. This is "0". Open one finger, this is "1", etc. Open all five fingers, this is "5". So on one hand you can handle one "senary digit". With two hands you can count from 0 to 35 (= 55₍₆₎). --SirJective 12:04, 21 Nov 2003 (UTC)

This is precisely what I meant Karl Palmen 15:23, 21 Nov 2003 UT

[edit] prime numbers

So this article implies, if p is prime, then p mod6 = 1 or p mod 6 = 5 ... can we get a link to an article or reference for this? linas 01:10, 1 Apr 2005 (UTC)

Dohh, never mind, its obvious. linas 00:38, 10 August 2005 (UTC)

[edit] errors

All prime numbers besides 2 and 3 end in either 1 or 5. Did the definition of Prime Number change? What happened to only being divisible by 1 or itself? What about 13, 17, 19, 23, 29, 37, 43, 47, 53, 59, 67, 73, 79, 83, 89, 97, 103, 107, 109, 113, ...? malachid69 08:14, 9 Aug 2005 (UTC)

That's base 10 not base 6. The statement is that p mod 6 is congruent to 1 or 5. The article wording should be changed to say "congruent" exactly in order to avoid this confusion. linas 00:38, 10 August 2005 (UTC)

[edit] big errors

There is a big mistake in this page. No number ending in 5 (except for 5 itself) is a prime number. Every single number with 5 as the final digit can be devided by 5. A correct list of prime numbers would be 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, etc.

I also noticed that there are quite some known perfect numbers that don't have 44 as the final two digits, like 28, 496 and 8128.

I don't know who wrote this page, but his maths are worse than mine, and people should not try to write articles about things they don't know about.

I am not great at maths, so I have no idea how I should correct this error and I don't have a clue what Senary would be good for, but I just thought I'd write this down here so someone who does know can correct the error here and then delete my message.

(The above message was posted on the main article page by 82.72.70.195 (talk • contribs). I'm just moving it here. - ulayiti (talk) 12:00, 20 August 2005 (UTC))

The poster didn't have a clue. However, everyone who reads this article seems to trip over this, so I will try to fix the article in just a moment. linas 15:56, 20 August 2005 (UTC)

OK, I think I fixed it for good. linas 16:15, 20 August 2005 (UTC)

[edit] consistency errors

I was looking through the other numeral systems, and I saw the box on the right that had all of the numeral systems in a single easy-to-use box, I would put it in myself, but i don't know how... example: Unary numeral system 18:37, 26 August 2005