login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A048976 Primes whose least primitive root is an odd prime. 2
7, 17, 23, 31, 43, 47, 71, 73, 79, 89, 97, 103, 113, 127, 137, 157, 167, 191, 193, 199, 223, 233, 239, 241, 257, 263, 277, 281, 283, 307, 311, 331, 353, 359, 383, 397, 401, 431, 433, 449, 457, 463, 479, 487, 499, 503, 521, 569, 571, 577, 593, 599, 601, 607 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Original name was "Primes for which an odd prime is a primitive root".

Primes in A317649. - Robert Israel, Aug 03 2018

REFERENCES

P. Ribenboim, The new book of prime number records, Springer 1996, pp. 22-25.

LINKS

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

Index entries for primes by primitive root

MAPLE

filter:= proc(n) local p;

  p:= numtheory:-primroot(n);

  p>2 and isprime(p)

end proc:

select(filter, [seq(ithprime(i), i=2..200)]); # Robert Israel, Aug 02 2018

MATHEMATICA

Select[Prime@ Range@ 112, If[# == {}, False, And[PrimeQ@ #, # > 2] &@ #[[1]] ] &@ PrimitiveRootList[#] &] (* Michael De Vlieger, Aug 02 2018 *)

CROSSREFS

Cf. A001918, A317649.

Sequence in context: A308816 A254678 A165353 * A088546 A265816 A246717

Adjacent sequences:  A048973 A048974 A048975 * A048977 A048978 A048979

KEYWORD

nonn

AUTHOR

Felice Russo

EXTENSIONS

More terms from James A. Sellers, Apr 22 2000

Definition corrected by Robert Israel, Aug 02 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 23 18:45 EDT 2021. Contains 345402 sequences. (Running on oeis4.)