1,1

Rivera conjectures that this sequence is finite.

Rivera's conjecture that this sequence is finite conflicts with heuristics; the next entry is almost certainly 6205, since Floor[(Pi-3)*10^6205] is (very) probably prime, though its proof may take decades - David Broadhurst (D.Broadhurst(AT)open.ac.uk), Nov 08 2000

C. K. Caldwell, Prime Curios

5 gives 14159 (prime); 12 gives 141592653589 (prime) and so on.

Cf. A064118.

Sequence in context: A009427 A009754 A096314 this_sequence A146542 A116058 A025580

Adjacent sequences: A047655 A047656 A047657 this_sequence A047659 A047660 A047661

nice,nonn,base

Carlos B. Rivera F. (crivera(AT)primepuzzles.net)