A243768 - OEIS

A243768

Primes p such that 6 is not a 6th power mod p.

7, 11, 13, 17, 19, 31, 37, 41, 43, 59, 61, 67, 73, 79, 83, 89, 97, 103, 107, 109, 113, 127, 131, 137, 151, 157, 179, 181, 193, 199, 211, 223, 227, 229, 233, 251, 257, 271, 277, 281, 283, 331, 347, 349, 353, 367, 373, 397, 401, 419, 421, 433, 439, 443, 449, 457, 463, 467, 487, 491, 521, 523, 541, 547, 563, 569

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Primes not in A243805

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

EXAMPLE

7 is prime and the sixth powers mod 7 are 0 and 1, so 7 is in the sequence.

MAPLE

select(p -> isprime(p) and nops([msolve(x^6-6, p)])=0, [seq(2*j+1, j=1..10^3)]);

MATHEMATICA