OFFSET
1,1
COMMENTS
Probably there are no more terms. [Arkadiusz Wesolowski, Jul 12 2011]
LINKS
Dario A. Alpern, Known prime factors of Googolplex - 1
G. L. Honaker, Jr. and Chris Caldwell, Prime Curios! 167772161
Eric Weisstein's World of Mathematics, Fermat Number
Eric Weisstein's World of Mathematics, Googolplex
Eric Weisstein's World of Mathematics, Greatest Common Divisor
MATHEMATICA
Select[Sort[Flatten[Table[z = k*2^n + 1; If[PowerMod[2, 2^100, z] == PowerMod[10, 10^100, z] == 1, z], {k, 1, 21, 2}, {n, 75}]]], PrimeQ] (* Arkadiusz Wesolowski, Sep 08 2011 *)
CROSSREFS
KEYWORD
fini,full,nonn
AUTHOR
Arkadiusz Wesolowski, Apr 12 2011
STATUS
approved