OFFSET
1,2
LINKS
Dario A. Alpern, Known prime factors of Googolplex - 10
Eric Weisstein's World of Mathematics, Googolplex
MATHEMATICA
Prepend[Select[Range[3, 3000, 2], PowerMod[10, 10^100, 10^# - 1] == 10 &], 1]
CROSSREFS
KEYWORD
fini,nonn
AUTHOR
Arkadiusz Wesolowski, Nov 23 2011
STATUS
approved