Quote:
Originally Posted by michaf
Without any math skills... so excuse me if I bugger here :>
base 22:
22*22^n + 1
=
22^(n+1) + 1
=
1*22^(n+1) + 1
so, k = 1
and that one is eliminated, therefore is k=22 and 484?

Unfortunately not. 1*22^1+1=23 prime, but, I think we decided for the Sierpinski base 5 exercise, that we would not use n=0, otherwise k=22 could be eliminated but not 484.