A253925 - OEIS

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

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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