OFFSET
1,1
COMMENTS
Record sporadic palindromic square with a prime root is 186627875420278656872024578726681.
LINKS
P. De Geest, Palindromic Squares
G. L. Honaker, Jr. and C. Caldwell, Prime Curios!
William Rex Marshall, Palindromic Squares [Internet Archive Wayback Machine]
EXAMPLE
a(6) = 900075181570009 = p^2 with p = 30001253, a prime.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Nov 03 2001
STATUS
approved