

A040165


Primes p such that x^5 = 5 has a solution mod p.


2



2, 3, 5, 7, 13, 17, 19, 23, 29, 31, 37, 43, 47, 53, 59, 67, 73, 79, 83, 89, 97, 103, 107, 109, 113, 127, 137, 139, 149, 157, 163, 167, 173, 179, 191, 193, 197, 199, 223, 227, 229, 233, 239, 251, 257, 263, 269, 271
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OFFSET

1,1


LINKS

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


MATHEMATICA

ok [p_]:=Reduce[Mod[x^5  5, p]== 0, x, Integers]=!= False; Select[Prime[Range[150]], ok] (* Vincenzo Librandi, Sep 12 2012 *)


PROG

(MAGMA) [p: p in PrimesUpTo(400)  exists(t){x : x in ResidueClassRing(p)  x^5 eq 5}]; // Vincenzo Librandi, Sep 12 2012


CROSSREFS

Sequence in context: A029743 A042990 A040169 * A162950 A259187 A040972
Adjacent sequences: A040162 A040163 A040164 * A040166 A040167 A040168


KEYWORD

nonn,easy


AUTHOR

N. J. A. Sloane.


STATUS

approved



