# [seqfan] Re: list of all non-prime coprimes of the full set of primorial numbers

Neil Fernandez primeness at borve.org
Thu Apr 20 16:37:26 CEST 2017

```Hi Jamie,

I don't understand your definition. No composite number (or prime
number) is coprime with every primorial.

Regards,

Neil

In message <1519076981.96001664.1492686862154.JavaMail.zimbra at shaw.ca>,
Jamie Morken <jmorken at shaw.ca> writes
>Hi,
>
>Here is a sequence I added as a draft: https://oeis.org/draft/A285510
>
>It is a list of all non-prime coprimes of the full set of primorial numbers.
>
>b-file: https://oeis.org/draft/A285510/b285510.txt
>
>ie:
>Pn(2) has 1 coprime: 1
>Pn(6) has 2 coprimes: 1,5
>Pn(30) has 8 coprimes: 1,7,11,13,17,19,23,29
>Pn(210) has 48 coprimes: etc..
>
>The sequence is a complete list of all non-prime coprimes for all Pn.  The
>sequence starts:
>
>1,121,143,169,187,209,221,247,289,299,323,361,377,391,403,437,481,493,527,529,53
>3,551,559,589,611,629,
>667,689,697,703,713,731,767,779,793,799,817,841,851,871,893,899,901,923,943,949,
>961,989,1003,1007,....
>
>Only large n values in the sequence will change when larger Pn are added to the
>set, values up to an increasingly
>large n will not change as larger Pn are added.
>
>cheers,
>Jamie
>
>--
>Seqfan Mailing list - http://list.seqfan.eu/

--
Neil Fernandez

```