OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
If k=2, then k711 = 2711 (prime).
If k=43, then k711 = 43711 (prime).
If k=58, then k711 = 58711 (prime).
MATHEMATICA
Select[Range[300], PrimeQ[1000#+711]&] (* Harvey P. Dale, Jul 21 2016 *)
PROG
(Magma) [ n: n in [1..700] | IsPrime(Seqint([1, 1, 7] cat Intseq(n))) ]; // Vincenzo Librandi, Feb 03 2011
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Parthasarathy Nambi, Mar 18 2005
STATUS
approved