1,2

Robert Israel, Table of n, a(n) for n = 1..10000

n=1 is in the sequence because n2323 = 12323 is prime.

n=87 is in the sequence because n2323 = 872323 is prime.

select(t -> isprime(10^4*t+2323), [$1..1000]); # Robert Israel, Mar 05 2020

Sequence in context: A024373 A111159 A210523 * A329953 A329671 A124571

Adjacent sequences: A109066 A109067 A109068 * A109070 A109071 A109072

nonn,base

Parthasarathy Nambi, Aug 17 2005

approved