A253925 Primes p such that both (p^2 + 5)/6 and (p^4 + 5)/6 are prime.

127, 1009, 1709, 2087, 2393, 2969, 3221, 3347, 7309, 7757, 7883, 10529, 11411, 12923, 17569, 18269, 21799, 23311, 23633, 24877, 25703, 26839, 27091, 29429, 35461, 35603, 38431, 39367, 39761, 41887, 42967, 43037, 45361, 45989, 47699, 52163, 59093, 63629, 65323, 67103, 68041, 69481, 70937, 74843, 77813, 77867

Offset

1,1

Comments

Intersection of A118915 and A247478.

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Example

a(1)=127=A118915(9)=A247478(9). a(2)=1009=A118915(45)=A247478(22).

Prog

(PARI) forprime(p=5, 1e6, if(isprime((p^2+5)/6) && isprime((p^4+5)/6), print1(p", "))) \\ Charles R Greathouse IV, Jan 19 2015

Crossrefs

Cf. A118915, A247478.

Sequence in context: A299818 A236304 A075942 * A196658 A077361 A225148

Adjacent sequences: A253922 A253923 A253924 * A253926 A253927 A253928

Keyword

nonn

Author

Zak Seidov, Jan 19 2015

Status

approved