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 1-1 of 1 results.

A219461 Primes p such that 2^p - 1 is a prime with primitive root 3.

Original entry on oeis.org

3, 5, 7, 17, 19, 89, 107, 521, 2203, 2281, 4253
Offset: 1

Views

Author

Arkadiusz Wesolowski, Nov 20 2012

Keywords

Comments

If A096393(n) = 3, then A000043(n) belongs to this sequence.
2^a(n) - 1 is in A001123.
a(12) >= 21701. - Max Alekseyev, Feb 08 2024

Crossrefs

Subsequence of A000043.

Programs

  • Mathematica
    Select[Prime@Range[98], PrimitiveRoot[2^# - 1] == 3 &]

Extensions

a(9)-a(11) from Max Alekseyev, Feb 07 2024
Showing 1-1 of 1 results.