1,1

1009 and 9973 are the smallest and the largest of four digit primes.

If n=32, then 9973*n - 1009 = 318127 (prime).

If n=116, then 9973*n - 1009 = 1155859 (prime).

Cf. A105680, A105710.

Sequence in context: A100017 A135110 A101539 this_sequence A104026 A110230 A007797

Adjacent sequences: A106697 A106698 A106699 this_sequence A106701 A106702 A106703

nonn

Parthasarathy Nambi (PachaNambi(AT)yahoo.com), May 13 2005