Read More
Date: 22-12-2020
1365
Date: 24-10-2020
765
Date: 26-8-2020
596
|
A natural number such that
whenever ( and are relatively prime) and . (Here, means that divides .) There are an infinite number of such numbers, the first few being 9, 15, 21, 33, 39, 51, ... (OEIS A033553).
The -numbers are the same as the 3-Knödel numbers.
REFERENCES:
Makowski, A. "Generalization of Morrow's -Numbers." Simon Stevin 36, 71, 1962/1963.
Sloane, N. J. A. Sequence A033553 in "The On-Line Encyclopedia of Integer Sequences."
|
|
"عادة ليلية" قد تكون المفتاح للوقاية من الخرف
|
|
|
|
|
ممتص الصدمات: طريقة عمله وأهميته وأبرز علامات تلفه
|
|
|
|
|
المجمع العلمي للقرآن الكريم يقيم جلسة حوارية لطلبة جامعة الكوفة
|
|
|