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A349678 Primes p such that the multiplicative order of 2 modulo k is odd, where k is the largest odd divisor of p - 1. 0
2, 3, 5, 17, 29, 47, 113, 179, 197, 257, 293, 317, 383, 449, 467, 479, 509, 569, 659, 719, 797, 863, 1289, 1373, 1427, 1439, 1487, 1823, 1913, 1949, 2063, 2207, 2213, 2273, 2339, 2417, 2447, 2579, 2633, 2879, 2909, 3023, 3119, 3137, 3167, 3347, 3359, 3449, 3557 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[3600], PrimeQ[#] && OddQ[MultiplicativeOrder[2, (# - 1)/2^IntegerExponent[# - 1, 2]]] &] (* Amiram Eldar, Nov 26 2021 *)
PROG
(PARI) isok(p) = isprime(p) && znorder(Mod(2, (p-1)/2^valuation(p-1, 2)))%2;
CROSSREFS
Subsequence of A348062.
Cf. A036259.
Sequence in context: A214735 A216061 A348062 * A029972 A077498 A118958
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified April 20 00:58 EDT 2024. Contains 371798 sequences. (Running on oeis4.)