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A061333 Primes with 21 as smallest positive primitive root. 1
409, 4441, 12841, 15889, 22751, 30091, 41809, 55921, 60889, 77167, 82183, 99823, 103561, 110281, 120391, 127249, 136471, 139201, 155671, 157351, 161881, 164209, 180361, 180799, 182839, 183823, 187711, 191047, 230929, 250423, 257263, 272191 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

T. D. Noe, Table of n, a(n) for n=1..1000

MATHEMATICA

Prime[ Select[ Range[24000], PrimitiveRoot[ Prime[ # ] ] == 21 & ] ]

(* or *)

Select[ Prime@Range@24000, PrimitiveRoot@# == 21 &] (* Robert G. Wilson v, May 11 2001 *)

CROSSREFS

Cf. A001918, A001126, A019348.

Sequence in context: A201483 A031601 A107625 * A262636 A238753 A157431

Adjacent sequences:  A061330 A061331 A061332 * A061334 A061335 A061336

KEYWORD

nonn

AUTHOR

Klaus Brockhaus, Apr 25 2001

STATUS

approved

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Last modified February 19 21:59 EST 2019. Contains 320328 sequences. (Running on oeis4.)