Last Updated
：2025/11/30
Sierpinski number
Noun
Japanese Meaning
数論におけるシェルピンスキー数とは、すべての自然数 n に対して、k×2ⁿ+1 が合成数（素数ではない）となるような奇数の正の整数 k のことを指す。
（ plural ）
Quizzes for review
(number theory) An odd natural number k such that k⨯2ⁿ+1 is composite for all natural numbers n.
音声機能が動作しない場合はこちらをご確認ください
See correct answer
Sierpinski number
After months of computation, the mathematicians confirmed that 78557 is a Sierpinski number.
See correct answer
After months of computation, the mathematicians confirmed that 78557 is a Sierpinski number.
音声機能が動作しない場合はこちらをご確認ください
English - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen the creation of new headword that may be duplicates
- Screen changing entry name
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
