A156124 -id:A156124 - cp's OEIS frontend

A156105 Primes p such that p + 72 is also prime.

7, 11, 17, 29, 31, 37, 41, 59, 67, 79, 101, 107, 109, 127, 139, 151, 157, 167, 179, 191, 197, 199, 211, 239, 241, 277, 281, 307, 311, 317, 337, 347, 349, 359, 367, 389, 419, 431, 449, 491, 499, 521, 541, 547, 569, 571, 587, 601, 619, 647, 661, 701, 739, 751

Offset: 1

Vincenzo Librandi, Feb 08 2009

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Cf. A156112, A156124.

[p: p in PrimesUpTo(1000)|IsPrime(p + 72)]; // Vincenzo Librandi, Oct 31 2012

Select[Prime[Range[1000]], PrimeQ[(# + 72)]&] (* Vincenzo Librandi, Oct 31 2012 *)

A156107 Primes p such that p + 144 is also prime.

Original entry on oeis.org

5, 7, 13, 19, 23, 29, 37, 47, 53, 67, 79, 83, 89, 97, 107, 113, 127, 137, 139, 149, 163, 167, 173, 193, 223, 229, 239, 257, 277, 313, 317, 347, 359, 379, 397, 419, 433, 443, 449, 457, 463, 487, 499, 503, 509, 547, 557, 599, 607, 613, 617, 643, 653, 677, 683

Offset: 1

Vincenzo Librandi, Feb 08 2009

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Cf. A156124.

[p: p in PrimesUpTo(1000)|IsPrime(p + 144)]; // Vincenzo Librandi, Oct 31 2012

Select[Prime[Range[1000]], PrimeQ[(# + 144)]&] (* Vincenzo Librandi, Oct 31 2012 *)

Inserted 13, 137, 509 - R. J. Mathar, Feb 19 2009

cp's OEIS Frontend

A156105 Primes p such that p + 72 is also prime.

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