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A103310 Largest prime primitive root of n, or 0 if no prime root exists. 5
0, 0, 0, 2, 3, 3, 5, 5, 0, 5, 7, 7, 0, 11, 5, 0, 0, 11, 11, 13, 0, 0, 19, 19, 0, 23, 19, 23, 0, 19, 0, 17, 0, 0, 31, 0, 0, 19, 29, 0, 0, 29, 0, 29, 0, 0, 43, 43, 0, 47, 47, 0, 0, 41, 47, 0, 0, 0, 47, 47, 0, 59, 53, 0, 0, 0, 0, 61, 0, 0, 0, 67, 0, 59, 61, 0, 0, 0, 0, 59, 0, 59, 71, 79, 0, 0, 73 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..86.

Eric Weisstein's World of Mathematics, Primitive Root.

CROSSREFS

Cf. A001918, A046144, A046145, A046146, A103309.

Sequence in context: A158745 A175108 A265145 * A046146 A081768 A273493

Adjacent sequences:  A103307 A103308 A103309 * A103311 A103312 A103313

KEYWORD

easy,nonn

AUTHOR

Harry J. Smith, Jan 29 2005

STATUS

approved

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Last modified February 21 01:03 EST 2020. Contains 332086 sequences. (Running on oeis4.)