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A070269
Primes for which the smallest positive primitive root is odd and nonprime.
2
2, 409, 439, 3631, 4441, 4657, 8681, 12841, 15889, 16633, 21559, 22751, 28393, 30091, 30937, 32257, 32353, 33811, 33871, 36793, 36871, 41809, 41851, 42193, 46649, 48673, 51631, 55921, 58237, 59053, 59497, 60889, 63691, 64609, 71011
OFFSET
1,1
LINKS
MATHEMATICA
onpQ[n_]:=Module[{pr=PrimitiveRoot[n, 1]}, OddQ[pr]&&!PrimeQ[pr]]; Select[ Prime[ Range[7100]], onpQ] (* Harvey P. Dale, Jun 22 2020 *)
PROG
(PARI) forprime(n=1, 100000, if((-1)^(lift(znprimroot(n))*(1-isprime(lift(znprimroot(n)))))==-1, print1(n, ", ")))
CROSSREFS
Sequence in context: A214597 A283661 A067827 * A352837 A352848 A349764
KEYWORD
easy,nonn
AUTHOR
Benoit Cloitre, May 09 2002
STATUS
approved