OFFSET
1,1
COMMENTS
Wilfrid Keller (2004, published) gave the first known example.
21484572547591559649 computed in 2017 by the author.
Conjecture: 21484572547591559649 is the smallest Sierpiński number that is divisible by 3. - Arkadiusz Wesolowski, May 12 2017
The above conjecture is false, because the Sierpiński number 7592506760633776533 is a counterexample. - Arkadiusz Wesolowski, Jul 27 2023
LINKS
Chris Caldwell, The Prime Glossary, Sierpinski number
Carlos Rivera, Problem 49. Sierpinski-like numbers, The Prime Puzzles & Problems Connection.
CROSSREFS
KEYWORD
nonn
AUTHOR
Arkadiusz Wesolowski, Mar 17 2011
EXTENSIONS
Name changed and entry revised by Arkadiusz Wesolowski, May 11 2017
STATUS
approved