A058941 Numbers k such that 3 + (integer formed from first k digits after decimal point in Pi) is prime.

0, 2, 7, 35, 59, 84, 451, 10090

Offset

1,2

Comments

No more terms below 10^3. - Patrick De Geest, Nov 25 2001

It is a probable prime for k = 10090. - Metin Sariyar, Jul 02 2020

Links

Table of n, a(n) for n=1..8.

G. L. Honaker, Jr. and C. K. Caldwell, Prime Curios! 1415929

Example

a(3) = 7 because 3 + 1415926 is prime.

Mathematica

Select[Range[0, 1000], PrimeQ[3+Floor[(Pi-3)*10^#]]&] (* Metin Sariyar, Jul 02 2020 *)

Crossrefs

Cf. A000796, A051710.

Sequence in context: A231580 A182408 A057298 * A287327 A020066 A024719

Adjacent sequences: A058938 A058939 A058940 * A058942 A058943 A058944

Keyword

base,nonn,hard,more

Author

G. L. Honaker, Jr., Jan 12 2001

Extensions

a(7) from Patrick De Geest, Nov 25 2001

a(8) from Metin Sariyar, Jul 02 2020

Status

approved