OFFSET
1,1
EXAMPLE
If k=14, then k111111111 = 14111111111 (prime).
If k=73, then k111111111 = 73111111111 (prime).
If k=142, then k111111111 = 142111111111 (prime).
PROG
(Magma) [ n: n in [1..700] | IsPrime(Seqint([1, 1, 1, 1, 1, 1, 1, 1, 1] cat Intseq(n))) ]; // Vincenzo Librandi, Feb 03 2011
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Parthasarathy Nambi, Feb 26 2005
STATUS
approved