A033560 Primes p such that 4!+p is also prime.

5, 7, 13, 17, 19, 23, 29, 37, 43, 47, 59, 73, 79, 83, 89, 103, 107, 113, 127, 139, 149, 157, 167, 173, 199, 227, 233, 239, 257, 269, 283, 293, 307, 313, 349, 359, 373, 397, 409, 419, 433, 439, 443, 463, 467, 479, 499, 523, 547, 563, 569, 577, 593, 607, 617, 619

Offset: 1

Author

Jeff Burch

Keywords

• nonn
• easy

Links

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

Programs

Magma

[p: p in PrimesUpTo(700)| IsPrime(p+24)]; // Vincenzo Librandi, Nov 18 2010

Mathematica

Select[Prime[Range[3, 1000]], PrimeQ[# + 24] &] (* Vincenzo Librandi, May 19 2014 *)