login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A128895 Least positive primitive root that all of the first n primes share. 2
1, 5, 17, 17, 17, 227, 227, 5297, 5297, 5297, 226817, 1227497, 2270483, 5967617, 8617187, 27311693, 39928787, 39928787, 345664343, 345664343 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Don Reble, Table of n, a(n) for n = 1..37

EXAMPLE

A primitive root of 2 must be == 1 (mod 2); for 3, it must be == 2 (mod 3), and for 5 it must be == 2 or 3 (mod 5). The smallest such number is 17, so a(3)=17.

CROSSREFS

Cf. A001918, A060749.

Sequence in context: A096896 A056850 A237437 * A141558 A231710 A040153

Adjacent sequences:  A128892 A128893 A128894 * A128896 A128897 A128898

KEYWORD

nonn

AUTHOR

Martin Raab, Apr 20 2007

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified October 22 02:31 EDT 2014. Contains 248381 sequences.