Re: Prime/Twin Prime Generator

From	ELI SOLOMON <mathdiscoverer@gmail.com>
Newsgroups	sci.math
Subject	Re: Prime/Twin Prime Generator
Date	2017-08-23 18:59 -0400
Organization	The Math Forum
Message-ID	<568787694.44796.1503541541239.JavaMail.root@sodium.mathforum.org> (permalink)

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Thank you for your list.
The method did not fail as you will find from the extract from my worksheet.
Unfortunately you included 231 which is not a prime number but a composite. You also jumbled the numbers - I wonder why? Anyway, I formatted the list in ascending order so as to work on it. Below are the results that I hope will convince you that twin primes can be extracted from your list.

I did not check if the numbers used were Prime numbers as others have done this and posted it on Google. Perhaps you will dispute that primes obtained from

Prime Number Lists - Math is Fun
https://www.mathsisfun.com/numbers/prime-number-lists.html

AND

https://www.di-mgt.com.au/primes1000.html

			
							
							
This was downloaded using the link below.							
https://www.di-mgt.com.au/primes1000.html
							
Column 'A' is a list submitted by you.  EXCEPT THAT YOU DID NOT LIST THEM IN ORDER.							
(Except that 231 is not a prime number)							
Column ''B" contains the divisor							
Column 'C' is the Quotient corrected to the nearest integer and formatted. As you will notice, it shows the twin primes scattered along the column. Only the Twin Primes have equal and unique quotients associated with them							
Column 'D' is the Quotient formatted to group the found twin primes.							
Column 'e' shows the twin primes alongside their equal and unique quotients
							
A	B	C	D	E
			
11	3	4	6	17			
17	3	6	6	19			
19	3	6	64	191			
37	3	12	64	193			
97	3	32	4	11			
127	3	42	12	37			
151	3	50	32	97			
157	3	52	42	127			
191	3	64	50	151			
193	3	64	52	157			
231	3	77	77	231	
		
231 is NOT a Prime number. It is a composite							
							
This was downloaded using the link below.							
https://www.di-mgt.com.au/primes1000.html
							
A	B	C	D	E
			
11	3	4	4	11			
13	3	4	4	13			
17	3	6	6	17			
19	3	6	6	19			
23	3	8	10	29			
29	3	10	10	31			
31	3	10	14	41			
37	3	12	14	43			
41	3	14	20	59			
43	3	14	20	61			
47	3	16	24	71			
53	3	18	24	73			
59	3	20	34	101			
61	3	20	34	103			
67	3	22	36	107			
71	3	24	36	109			
73	3	24	46	137			
79	3	26	46	139			
83	3	28	50	149			
89	3	30	50	151			
97	3	32	60	179			
101	3	34	60	181			
103	3	34	64	191			
107	3	36	64	193			
109	3	36	66	197			
113	3	38	66	199			
127	3	42	76	227			
131	3	44	76	229			
137	3	46	80	239			
139	3	46	80	241			
149	3	50	90	269			
151	3	50	90	271			
157	3	52	8	23			
163	3	54	12	37			
167	3	56	16	47			
173	3	58	18	53			
179	3	60	22	67			
181	3	60	26	79			
191	3	64	28	83			
193	3	64	30	89			
197	3	66	32	97			
199	3	66	38	113			
211	3	70	42	127			
223	3	74	44	131			
227	3	76	52	157			
229	3	76	54	163			
233	3	78	56	167			
239	3	80	58	173			
241	3	80	70	211			
251	3	84	74	223			
257	3	86	78	233			
263	3	88	84	251			
269	3	90	86	257			
271	3	90	88	263	

I apologize for the way the table appears in the post. I checked in in the preview page and found the columns squashed. 		
	

As you will notice, Column 'C' shows the equal quotients (and twin primes) scattered along the list.
Column 'E' grouped the twin primes in ascending order.

Formatting in my worksheet showed the equal quotients and twin primes in highlighted (colored cells). Unfortunately, this did not transfer when the worksheet was pasted. Having the cells highlighted helps in quickly scanning for twin primes. 

I could e-mail you the worksheet that shows the relevant cells highlighted if you e-mail me at

mathdiscoverer@gmail.com

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Re: Prime/Twin Prime Generator ELI SOLOMON <mathdiscoverer@gmail.com> - 2017-08-23 18:59 -0400
  Re: Prime/Twin Prime Generator Peter Percival <peterxpercival@hotmail.com> - 2017-08-24 05:07 +0100
  Re: Prime/Twin Prime Generator Pubkeybreaker <pubkeybreaker@aol.com> - 2017-08-24 02:57 -0700
    Re: Prime/Twin Prime Generator Bill <BILL_NOSPAM@whoknows.net> - 2017-08-24 07:32 -0400
      Re: Prime/Twin Prime Generator FromTheRafters <erratic@nomail.afraid.org> - 2017-08-24 07:44 -0400
        Re: Prime/Twin Prime Generator Pubkeybreaker <pubkeybreaker@aol.com> - 2017-08-24 05:04 -0700
          Re: Prime/Twin Prime Generator FromTheRafters <erratic@nomail.afraid.org> - 2017-08-24 08:49 -0400
          Re: Prime/Twin Prime Generator Bill <BILL_NOSPAM@whoknows.net> - 2017-08-24 08:53 -0400
        Re: Prime/Twin Prime Generator Bill <BILL_NOSPAM@whoknows.net> - 2017-08-24 08:44 -0400
          Re: Prime/Twin Prime Generator richard@cogsci.ed.ac.uk (Richard Tobin) - 2017-08-24 13:01 +0000
            Re: Prime/Twin Prime Generator Bill <BILL_NOSPAM@whoknows.net> - 2017-08-24 09:07 -0400
            Re: Prime/Twin Prime Generator FromTheRafters <erratic@nomail.afraid.org> - 2017-08-24 09:59 -0400
      Re: Prime/Twin Prime Generator Pubkeybreaker <pubkeybreaker@aol.com> - 2017-08-24 05:02 -0700
        Re: Prime/Twin Prime Generator Bill <BILL_NOSPAM@whoknows.net> - 2017-08-24 08:36 -0400
          Re: Prime/Twin Prime Generator Pubkeybreaker <pubkeybreaker@aol.com> - 2017-08-24 05:42 -0700
            Re: Prime/Twin Prime Generator Bill <BILL_NOSPAM@whoknows.net> - 2017-08-24 08:50 -0400
              Re: Prime/Twin Prime Generator FromTheRafters <erratic@nomail.afraid.org> - 2017-08-24 09:23 -0400
              Re: Prime/Twin Prime Generator Pubkeybreaker <pubkeybreaker@aol.com> - 2017-08-24 07:11 -0700
            Re: Prime/Twin Prime Generator Bill <BILL_NOSPAM@whoknows.net> - 2017-08-24 08:58 -0400
          Re: Prime/Twin Prime Generator FromTheRafters <erratic@nomail.afraid.org> - 2017-08-24 09:15 -0400
        Re: Prime/Twin Prime Generator Bill <BILL_NOSPAM@whoknows.net> - 2017-08-24 08:38 -0400
          Re: Prime/Twin Prime Generator Bill <BILL_NOSPAM@whoknows.net> - 2017-08-24 09:04 -0400

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