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bn:00935467n
Noun Concept
Categories: Science and technology in Poland, Prime numbers, All articles containing potentially dated statements, Unsolved problems in number theory, All articles with unsourced statements
EN
Sierpinski number  Sierpiński number  78,557  Selfridge's conjecture  Selfridge conjecture
EN
In number theory, a Sierpiński number is an odd natural number k such that k × 2 n + 1 {\displaystyle k\times 2^{n}+1} is composite for all natural numbers n. Wikipedia
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EN
In number theory, a Sierpiński number is an odd natural number k such that k × 2 n + 1 {\displaystyle k\times 2^{n}+1} is composite for all natural numbers n. Wikipedia
An odd natural number k such that k × 2 n + 1 is composite for all natural numbers n. Wiktionary
IS A
natural number
NAMED AFTER
Wacław Sierpiński
Wikipedia
EN
Sierpiński number
Wikidata
EN
Sierpinski number
Wiktionary
EN
Sierpinski number
Wikipedia Redirections
EN
78,557, Selfridge's conjecture, Selfridge conjecture, Sierpinski number, Sierpinski numbers, Sierpinski problem

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