The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A060519 Primes p that have exactly three primitive roots that are not primitive roots mod p^2. 2
 1103, 6569, 13187, 14939, 15313, 16649, 18587, 22091, 22769, 25163, 26189, 26759, 32069, 32647, 33289, 34381, 34939, 37397, 38459, 39047, 42863, 47189, 47699, 54011, 54139, 57173, 57527, 57923, 59539, 61553, 63311, 63347, 63467 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS If x is a primitive root mod prime p then either x is a primitive root mod p^2 or x has order p-1 mod p^2. LINKS EXAMPLE 284, 793 and 1054 are primitive roots mod 1103, but not mod 1103^2. CROSSREFS Cf. A060503, A055578, A060518, A060520. Sequence in context: A250796 A271431 A272754 * A197422 A291134 A233563 Adjacent sequences:  A060516 A060517 A060518 * A060520 A060521 A060522 KEYWORD nonn AUTHOR Jud McCranie, Mar 24 2001 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.

Last modified January 27 10:39 EST 2022. Contains 350607 sequences. (Running on oeis4.)