cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-3 of 3 results.

A076130 Out of all the n-digit primes, which one takes the longest time to appear in the digits of Pi (ignoring the initial 3)? The answer is A076106(n) and the position where this prime appears is a(n).

Original entry on oeis.org

13, 299, 5229, 75961, 715492, 11137824, 135224164
Offset: 1

Views

Author

Jean-Christophe Colin (jc-colin(AT)wanadoo.fr), Oct 31 2002

Keywords

Comments

a(8) requires more than 10^9 digits of Pi. - Michael S. Branicky, Jul 08 2021

Examples

			Of all the 2-digit primes, 11 to 97, the last one to appear in Pi is 73, at position 299 (see A076106).  - _N. J. A. Sloane_, Nov 28 2019

Links

Crossrefs

Cf. A000796, A047658, A076094, A076129, A076106.

Programs

Extensions

Edited by Charles R Greathouse IV, Aug 02 2010
Definition clarified by N. J. A. Sloane, Nov 28 2019
a(7) from Michael S. Branicky, Jul 08 2021

A076094 First n-digit prime encountered in decimal expansion of Pi (ignoring the initial 3).

Original entry on oeis.org

5, 41, 653, 4159, 14159, 358979, 1592653, 28841971, 795028841, 5926535897, 93238462643, 141592653589, 9265358979323, 23846264338327, 841971693993751, 8628034825342117, 89793238462643383, 348253421170679821, 3832795028841971693, 89793238462643383279
Offset: 1

Views

Author

Jean-Christophe Colin (jc-colin(AT)wanadoo.fr), Oct 31 2002

Keywords

Links

Crossrefs

Cf. A047658, A076106, A076129.

Programs

  • Mathematica
    With[{pid=Rest[RealDigits[Pi,10,1000][[1]]]},Table[Select[ FromDigits/@ Partition[ pid,n,1],PrimeQ,1],{n,20}]]//Flatten (* Harvey P. Dale, May 01 2017 *)

Extensions

More terms from Sean A. Irvine, Mar 19 2025

A076129 Position of first n-digit prime encountered in decimal expansion of Pi (ignoring the initial 3).

Original entry on oeis.org

4, 2, 7, 2, 1, 9, 3, 33, 29, 4, 14, 1, 5, 16, 35, 81, 11, 86, 25, 11, 24, 214, 34, 17, 16, 2, 40, 16, 233, 16, 166, 91, 250, 14, 8, 11, 30, 2, 56, 289, 3, 98, 217, 501, 47, 163, 197, 200, 127, 6, 362, 142, 10, 137, 486, 31, 229, 81, 354, 514, 333, 185, 175, 222
Offset: 1

Views

Author

Jean-Christophe Colin (jc-colin(AT)wanadoo.fr), Oct 31 2002

Keywords

Links

Crossrefs

Cf. A047658, A076106, A076094.
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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