OFFSET
1,1
COMMENTS
The sequence appears to be infinite. The number of terms below 10^1000 are 5749.
LINKS
Shyam Sunder Gupta, Table of n, a(n) for n = 1..3032
EXAMPLE
a(2)= 10091 is in the sequence because it is a prime of the form abcda.
MATHEMATICA
s[n_]:=Select[Union@Flatten@Table[FromDigits@Flatten@Join[IntegerDigits@Table[b, {n}], {IntegerDigits@Floor[b/1000]}], {b, 1000, 9999}], PrimeQ]; Array[s, 2]//Flatten
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Shyam Sunder Gupta, Aug 30 2013
STATUS
approved