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Search: Posts Made By: R. Gerbicz
Forum: Conjectures 'R Us 2020-03-27, 20:31
Replies: 40
Views: 20,534
Posted By R. Gerbicz
You need less, for example for k=9 you need the...

You need less, for example for k=9 you need the algebraic factor only for n==0 mod 6, because the 9*1024^n-1 sequence for
n==1 mod 2 is divisible by 5
n==2 mod 6 is divisible by 7
n==4 mod 6 is...
Forum: Conjectures 'R Us 2020-03-27, 15:14
Replies: 40
Views: 20,534
Posted By R. Gerbicz
gd_barnes is right, to extend his post: to get...

gd_barnes is right, to extend his post:
to get a riesel/sierpinski cover you have to use d_i divisors in each remainder class in the covering set, you can't use algebraic factors, you can't use even...
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