Английская Википедия:261 (number)

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Версия от 19:48, 25 декабря 2023; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{Infobox number | number = 261 | divisor = 1, 3, 9, 29, 87, 261 }} '''261''' ('''two hundred [and] sixty-one''') is a natural number proceeded by the number 260 and followed by 262. It has the prime factorization 3<sup>2</sup>·29. == Mathematical properties == There are six divisors of this number, the divisors being {{num|1}}, {{num|3}}, {{num|9}},...»)
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Шаблон:Infobox number 261 (two hundred [and] sixty-one) is a natural number proceeded by the number 260 and followed by 262. It has the prime factorization 32·29.

Mathematical properties

There are six divisors of this number, the divisors being Шаблон:Num, Шаблон:Num, Шаблон:Num, Шаблон:Num, Шаблон:Num, and 261 itself.[1] 261 is a deficient number, since Шаблон:Math

261 is nonagonal number, unique period in base 2, and the number of possible unfolded tesseract patterns.

261 is a lucky number, as well as an odious number, meaning it has an odd number of 1's in its binary expansion, which is Шаблон:Math (with 3 ones in it).[2]

References

Шаблон:Reflist

Шаблон:Integers