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A113576
Least (2n-1)-digit palindromic prime == 1 (mod 2n-1), or 0 if no such prime exists.
1
2, 151, 10301, 1008001, 100161001, 10002520001, 1000605060001, 100000323000001, 10000007070000001, 1000000310130000001, 100000000212000000001, 10000000001710000000001, 1000000000016100000000001, 100000000000656000000000001, 10000000000004740000000000001
OFFSET
1,1
COMMENTS
Conjecture: No term is zero.
EXAMPLE
a(3) = 10301 == 1 mod 5.
CROSSREFS
Cf. A113575.
Sequence in context: A046473 A261967 A024245 * A102458 A206309 A265880
KEYWORD
base,easy,nonn
AUTHOR
Amarnath Murthy, Nov 06 2005
EXTENSIONS
More terms from R. J. Mathar, Aug 28 2007
STATUS
approved