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Groups > comp.lang.javascript > #29357
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
|---|---|
| Newsgroups | comp.lang.javascript |
| Subject | Re: Primality sieve challenge |
| Date | 2016-01-19 20:04 +0100 |
| Organization | PointedEars Software (PES) |
| Message-ID | <1860806.lZUhBWmd6J@PointedEars.de> (permalink) |
| References | (4 earlier) <87ziw27kln.fsf@bsb.me.uk> <2865358.ifOrN9Bpor@PointedEars.de> <0f34c52b-ae45-49b0-8363-080d3d11d5fb@googlegroups.com> <3532030.noGN7VB15C@PointedEars.de> <06c1db3d-5ab3-4d76-bb98-b48adfbaa900@googlegroups.com> |
Scott Sauyet wrote:
> Thomas 'PointedEars' Lahn wrote:
>> Scott Sauyet wrote:
>>> Thomas 'PointedEars' Lahn wrote:
>>>> Ben Bacarisse wrote:
>>>>> but all those that have the form 6k + {0, 2, 3, 4} are clearly
>>>>> composite.
>>>> I can see why it is so for {0, 2, 4} (all multiples of 6 are divisible
>>>> by 2, so are the sums when added 2 or 4), but why also for the summand
>>>> 3?
>>> Because 6k + 3 is divisible by 3.
>> […]
>>> And if it's greater than 5 it's clearly not equal to 3, so it's not
>>> prime.
>> I find that a specious argument at best.
>
> A number that is divisible by a prime, but is not actually equal to that
> prime is, by definition, composite. I can't see why you consider that
> specious.
I find that argument specious *at best* because it does not follow that a
number is not prime when it is greater than 5 and not equal to 3. Perhaps
I am misunderstanding what you mean by “it”.
> [explanation]
Thanks, see my other followup.
--
PointedEars
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Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-17 01:40 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-17 02:20 -0800
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-17 16:24 +0000
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-17 09:03 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-17 09:17 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-17 09:22 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-17 11:32 -0800
Re: Primality sieve challenge Stefan Weiss <krewecherl@gmail.com> - 2016-01-18 00:13 +0100
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-18 04:10 -0800
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-18 01:20 +0000
Re: Primality sieve challenge "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-18 12:16 +0100
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-18 11:25 +0000
Re: Primality sieve challenge "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-18 12:43 +0100
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-18 04:18 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-18 04:25 -0800
Re: Primality sieve challenge Gene Wirchenko <genew@telus.net> - 2016-01-18 09:52 -0800
Re: Primality sieve challenge "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-18 19:23 +0100
Re: Primality sieve challenge "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-18 10:48 -0800
Re: Primality sieve challenge Gene Wirchenko <genew@telus.net> - 2016-01-18 13:09 -0800
Re: Primality sieve challenge Scott Sauyet <scott.sauyet@gmail.com> - 2016-01-18 13:14 -0800
Re: Primality sieve challenge "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-18 22:45 +0100
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-18 14:23 -0800
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-18 22:56 +0000
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-18 15:02 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-18 16:04 -0800
Re: Primality sieve challenge Stefan Weiss <krewecherl@gmail.com> - 2016-01-19 02:42 +0100
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-18 23:34 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-19 01:34 -0800
Re: Primality sieve challenge "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-19 06:23 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-19 07:10 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-19 07:15 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-19 08:34 -0800
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-19 16:54 +0000
Re: Primality sieve challenge "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-19 08:57 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-19 10:18 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-19 10:59 -0800
Re: Primality sieve challenge Stefan Weiss <krewecherl@gmail.com> - 2016-01-20 01:33 +0100
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-20 02:10 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-20 02:21 -0800
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-20 10:45 +0000
Re: Primality sieve challenge "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-20 06:43 -0800
Re: Primality sieve challenge Scott Sauyet <scott.sauyet@gmail.com> - 2016-01-20 15:21 -0800
Re: Primality sieve challenge Stefan Weiss <krewecherl@gmail.com> - 2016-01-21 03:18 +0100
Re: Primality sieve challenge Jon Ribbens <jon+usenet@unequivocal.co.uk> - 2016-01-21 12:12 +0000
Re: Primality sieve challenge Dr J R Stockton <reply1600@merlyn.demon.co.uk.invalid> - 2016-01-21 23:20 +0000
Re: Primality sieve challenge Stefan Weiss <krewecherl@gmail.com> - 2016-01-22 19:44 +0100
Re: Primality sieve challenge Dr J R Stockton <reply1600@merlyn.demon.co.uk.invalid> - 2016-01-23 21:50 +0000
Re: Primality sieve challenge Stefan Weiss <krewecherl@gmail.com> - 2016-01-24 01:26 +0100
Re: Primality sieve challenge "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-23 17:54 -0800
Re: Primality sieve challenge "Chris M. Thomasson" <nospam@no-spam.ws> - 2016-01-24 13:34 -0800
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-25 00:21 +0000
Re: Primality sieve challenge Stefan Weiss <krewecherl@gmail.com> - 2016-01-25 03:08 +0100
Re: Primality sieve challenge "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-24 19:35 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-25 03:53 -0800
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-18 19:32 +0000
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-17 19:51 +0000
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-17 13:43 -0800
Re: Primality sieve challenge "Chris M. Thomasson" <nospam@nospam.nospam> - 2016-01-17 12:46 -0800
Re: Primality sieve challenge Gene Wirchenko <genew@telus.net> - 2016-01-18 09:50 -0800
Re: Primality sieve challenge Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-18 20:09 +0100
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-18 19:28 +0000
Re: Primality sieve challenge Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-18 21:37 +0100
Re: Primality sieve challenge Scott Sauyet <scott.sauyet@gmail.com> - 2016-01-18 13:12 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-18 13:46 -0800
Re: Primality sieve challenge jonas.thornvall@gmail.com - 2016-01-18 14:00 -0800
Re: Primality sieve challenge Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-19 13:47 +0100
Re: Primality sieve challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-19 14:04 +0000
Re: Primality sieve challenge Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-19 19:59 +0100
Re: Primality sieve challenge Scott Sauyet <scott.sauyet@gmail.com> - 2016-01-19 10:55 -0800
Re: Primality sieve challenge Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-19 20:04 +0100
Re: Primality sieve challenge Scott Sauyet <scott.sauyet@gmail.com> - 2016-01-19 13:42 -0800
Re: Primality sieve challenge Erwin Moller <erwinmollerusenet@xs4all.nl> - 2016-01-21 17:21 +0100
Re: Primality sieve challenge Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-03 19:52 +0100
Re: Primality sieve challenge Dr J R Stockton <reply1600@merlyn.demon.co.uk.invalid> - 2016-01-19 19:43 +0000
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