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A145477 Primes p such that (23+p)/2 is prime. +0
2
3, 11, 23, 59, 71, 83, 179, 191, 239, 251, 311, 359, 431, 443, 479, 491, 503, 563, 599, 683, 743, 839, 863, 911, 983, 1019, 1091, 1103, 1151, 1163, 1259, 1283, 1499, 1523, 1571, 1619, 1871, 1931, 2003, 2039, 2099, 2339, 2351, 2411, 2423, 2531, 2543, 2579 (list; graph; listen)
OFFSET

1,1

COMMENT

All these primes are congruent to 3 mod 4 and (with exception first one) to 11 mod 12

MATHEMATICA

aa = {}; k = 23; Do[If[PrimeQ[(k + Prime[n])/2], AppendTo[aa, Prime[n]]], {n, 1, 500}]; aa

CROSSREFS

Cf. A092109, A145471-A145480.

Sequence in context: A107138 A145473 A128928 this_sequence A098828 A165635 A032026

Adjacent sequences: A145474 A145475 A145476 this_sequence A145478 A145479 A145480

KEYWORD

nonn

AUTHOR

Artur Jasinski (grafix(AT)csl.pl), Oct 11 2008

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.


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