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777 is an odd, composite, palindromic [1] repdigit. [2] It is also a sphenic number, [3] an extravagant number, [4] a lucky number, [5] a polite number, [6] an amenable number, and a deficient number. 777 is a congruent number, [7] as it is possible to make a right triangle with rationally numbered side lengths whose area is 777. [8]
Individual polygons are named (and sometimes classified) according to the number of sides, combining a Greek-derived numerical prefix with the suffix -gon, e.g. pentagon, dodecagon. The triangle, quadrilateral and nonagon are exceptions, although the regular forms trigon, tetragon, and enneagon are sometimes encountered as well.
On April 9, 1994, the first 777, number WA001, ... 777 Business Jet (777 VIP) – the Boeing Business Jet version of the 777 that is sold to corporate customers ...
What does 777 mean? Here's a dive into the meaning of the angel number 777 or 7777 according to psychics and numerologists. Angel number 777: Why seeing this pattern is a call from your highest self
The original 777-200 model first entered service in 1995, followed by the extended-range 777-200ER in 1997. [6] The stretched 777-300, which is 33.3 ft (10.1 m) longer, began service in 1998. The longer-range 777-300ER and 777-200LR variants entered service in 2004 and 2006, respectively, while a freighter version, the 777F, debuted in 2009. [6]
In mathematics, a polygonal number is a number that counts dots arranged in the shape of a regular polygon [1]: 2-3 . These are one type of 2-dimensional figurate numbers . Polygonal numbers were first studied during the 6th century BC by the Ancient Greeks, who investigated and discussed properties of oblong , triangular , and square numbers ...
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The number of 777 customers had grown to 25 airlines by June 1997, with 323 aircraft on order. [2] On August 26, 2004, Singapore Airlines followed up with a US$4 billion order for the 777-300ER, including 18 firm orders and 13 options. [3] The combined orders would make the carrier's 777 fleet number 77 when deliveries were complete. [3]