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It has an aliquot sum of 42; within an aliquot sequence of thirteen composite numbers (30, 42, 54, 66, 78, 90, 144, 259, 45, 33, 15, 9, 4, 3, 1, 0) to the Prime in the 3-aliquot tree. From 1 to the number 30, this is the longest Aliquot Sequence. It is also: A semiperfect number, since adding some subsets of its divisors (e.g., 5, 10 and 15 ...
The final digit of a triangular number is 0, 1, 3, 5, 6, or 8, and thus such numbers never end in 2, 4, 7, or 9. A final 3 must be preceded by a 0 or 5; a final 8 must be preceded by a 2 or 7. In base 10, the digital root of a nonzero triangular number is always 1, 3, 6, or 9. Hence, every triangular number is either divisible by three or has a ...
The numero sign or numero symbol, № (also represented as Nº, No̱, №, No., or no.), [1] [2] is a typographic abbreviation of the word number(s) indicating ordinal numeration, especially in names and titles. For example, using the numero sign, the written long-form of the address "Number 29 Acacia Road" is shortened to "№ 29 Acacia Rd ...
[4] The first locomotive to be converted was Engine No. 3088 which was delivered by Clyde Engineering on 22 August 1928. This company delivered a total of 10 conversions of these engines, the remainder being carried out at the New South Wales Government Railways' Eveleigh Railway Workshops. All of the engines were completed by July 1933. [2]
All 14 squares in a 3×3-square (4×4-vertex) grid. As well as counting spheres in a pyramid, these numbers can be used to solve several other counting problems. For example, a common mathematical puzzle involves counting the squares in a large n by n square grid. [11] This count can be derived as follows: The number of 1 × 1 squares in the ...
Pages in category "HK 4.6×30mm firearms" The following 4 pages are in this category, out of 4 total. ... This page was last edited on 30 July 2018, ...
Coatepeque (Spanish pronunciation: [koateˈpeke]), also known as Village of gardenias, is a town and municipality in the Quetzaltenango department of Guatemala.According to the 2018 census, the town of Coatepeque had a population of 37,330.
The Interoceanic Train of the Isthmus of Tehuantepec (Spanish: Tren Interoceánico del Istmo de Tehuantepec) is a government-owned railway system in Mexico that has 3 lines. It seeks to become a global logistics network focused on the manufacture and movement of goods between the Pacific Ocean and the Atlantic Ocean through the Isthmus of ...