login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Primes p such that p + 512 is also prime.
3

%I #19 Mar 20 2023 13:39:04

%S 11,29,59,89,101,107,131,149,179,197,227,239,257,311,317,347,479,509,

%T 521,557,617,641,659,701,719,809,887,911,941,947,971,977,1019,1031,

%U 1097,1109,1151,1181,1187,1229,1277,1289,1319,1361,1367,1439,1481,1487,1499,1571,1601

%N Primes p such that p + 512 is also prime.

%C All terms are == 5 (mod 6).

%e 59 and 59 + 512 = 571 are both prime.

%Y Cf. A000040.

%Y Cf. sequences of the type p + k are primes: A001359 (k = 2), A023200 (k = 4), A023202 (k = 8), A049488 (k = 16), A049489 (k = 32), A049490 (k = 64), A049491 (k = 128), A361483 (k = 256), this sequence (k = 512), A361485 (k = 1024).

%K nonn,easy

%O 1,1

%A _Elmo R. Oliveira_, Mar 13 2023