A290402 Primes congruent to {7, 17} mod 24.

7, 17, 31, 41, 79, 89, 103, 113, 127, 137, 151, 199, 223, 233, 257, 271, 281, 353, 367, 401, 439, 449, 463, 487, 521, 569, 593, 607, 617, 631, 641, 727, 751, 761, 809, 823, 857, 881, 919, 929, 953, 967, 977, 991, 1039, 1049, 1063, 1087, 1097, 1193, 1217, 1231

Offset

1,1

Comments

All these primes do not divide any number of the form 3*2^k - 1. Therefore, they are not in A001915.

Links

Table of n, a(n) for n=1..52.

Formula

A107006 UNION A107181.

Mathematica

Select[Prime@Range[202], MemberQ[{7, 17}, Mod[#, 24]] &]

Prog

(Magma) [p: p in PrimesUpTo(1231) | p mod 24 in {7, 17}];

Crossrefs

Cf. A001915, A107006, A107181.

Sequence in context: A006142 A228345 A196167 * A001123 A094080 A046118

Adjacent sequences: A290399 A290400 A290401 * A290403 A290404 A290405

Keyword

nonn

Author

Arkadiusz Wesolowski, Aug 03 2017

Status

approved