A361898 A set of 13 primes that form a covering set for a Sierpiński (or Riesel) number.

3, 5, 7, 11, 31, 73, 97, 151, 241, 631, 673, 1321, 23311

Offset

1,1

Comments

A set of primes is called the covering set for the Sierpiński number k if for every positive integer m there is at least one prime in the set which divides k*2^m + 1. Similarly, a set of primes is called the covering set for the Riesel number j if for every positive integer m there is at least one prime in the set which divides j*2^m - 1.

Links

Table of n, a(n) for n=1..13.

Crossrefs

Subset of A296924.

Cf. A076336, A101036, A291360, A361899, A361900.

Sequence in context: A060771 A265788 A061245 * A230139 A242944 A137355

Adjacent sequences: A361895 A361896 A361897 * A361899 A361900 A361901

Keyword

nonn,fini,full

Author

Arkadiusz Wesolowski, Mar 28 2023

Status

approved