OFFSET
1,1
COMMENTS
Equivalently, primes p such that 5^p == p+5 (mod p^2), or Fermat quotient q_p(5) == 1/5 (mod p). - Max Alekseyev, Sep 16 2024
PROG
(PARI) forprime(p=1, , if(Mod(p+5, p^2)^(p-1)==1, print1(p, ", ")))
CROSSREFS
KEYWORD
nonn,hard,more,bref
AUTHOR
Felix Fröhlich, Jul 21 2022
STATUS
approved