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A113575
Least (2n-1)-digit palindromic prime == 1 (mod n), or 0 if no such prime exists.
1
2, 101, 10501, 1003001, 100030001, 10000500001, 1000024200001, 100000323000001, 10000005750000001, 1000000008000000001, 100000005484500000001, 10000000004640000000001, 1000000001102011000000001, 100000000000131000000000001, 10000000000003830000000000001
OFFSET
1,1
COMMENTS
Conjecture: No term is zero.
EXAMPLE
a(4) = 1003001 == 1 mod 4.
CROSSREFS
Cf. A113576.
Sequence in context: A035325 A266457 A028989 * A068160 A173640 A111012
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Nov 06 2005
EXTENSIONS
More terms from R. J. Mathar, Aug 28 2007
STATUS
approved