OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
If n=18, then n10001 = 1810001 (prime).
If n=98, then n10001 = 9810001 (prime).
MAPLE
read("transforms") :
for n from 1 to 1000 do p := digcat2(n, 10001) ; if isprime(p) then printf("%d, ", n); end if; end do: # R. J. Mathar, Feb 02 2011
MATHEMATICA
Select[Range[600], PrimeQ[#*10^5+10001]&] (* Harvey P. Dale, Apr 29 2018 *)
CROSSREFS
KEYWORD
base,nonn,easy
AUTHOR
Parthasarathy Nambi, Apr 09 2005
STATUS
approved