A nonagonal number, or an enneagonal number, is a figurate number that extends the concept of triangular and square numbers to the nonagon (a nine-sided...

A centered nonagonal number, (or centered enneagonal number), is a centered figurate number that represents a nonagon with a dot in the center and all...

number 3072 – 3-smooth number (210×3) 3075 – nonagonal number 3078 – 18th pentagonal pyramidal number 3080 – pronic number 3081 – triangular number,...

406 = 2 × 7 × 29, sphenic number, 28th triangular number, centered nonagonal number, even nontotient, Narayana's cow number HTTP status code for "Not...

numbers are of the form p + 2a2 5778 – triangular number 5781 – nonagonal number 5798 – Motzkin number 5801 – super-prime 5807 – safe prime, balanced prime...

safe prime 6053 – Sophie Germain prime 6069 – nonagonal number 6073 – balanced prime 6079 – The serial number Winston Smith is referred to as in the George...

1090. It is a square number (33 squared), a nonagonal number, a 32-gonal number, a 364-gonal number, and a centered octagonal number. 1089 is the first...

the fourth centered nonagonal number). 19 × 91 = 1729, the first Hardy-Ramanujan number or taxicab number, also a Harshad number in base-ten, as it is...

Mertens function zero, Fine number 2122 – Mertens function zero 2125 – nonagonal number 2127 – sum of the first 34 primes 2129 – Sophie Germain prime 2135...

the natural number following 110 and preceding 112. 111 is the fourth non-trivial nonagonal number, and the seventh perfect totient number. 111 is furthermore...

digits is also 10. the 5th heptagonal number, the 5th square pyramidal number, and the 4th centered nonagonal number. 55 is also the 19th semiprime and the...

books published in Mexico 969 = 3 × 17 × 19, sphenic number, nonagonal number, tetrahedral number ISBN Group Identifier for books published in Pakistan...

a nonagonal number. a centered cube number. palindromic in base 18 (1D118). the model number of U-559. 560 = 24 × 5 × 7. It is: a tetrahedral number. a...

highly cototient number, product of three consecutive primes 4200 – nonagonal number, pentagonal pyramidal number, largely composite number 4210 – 11th semi-meandric...

1349 = Stern-Jacobsthal number 1350 = nonagonal number 1351 = number of partitions of 28 into a prime number of parts 1352 = number of surface points on...

to also be a centered hexagonal number. a centered nonagonal number. a centered cube number. a square pyramidal number, being the sum of the squares of...

second kind ( 2 6 − 6 2 {\displaystyle 2^{6}-6^{2}} ), and a centered nonagonal number. It appears in the Padovan sequence, preceded by the terms 12, 16,...

United Kingdom, admirable number 651 = 3 × 7 × 31, sphenic number, pentagonal number, nonagonal number 652 = 22 × 163, maximal number of regions by drawing...

heptagonal number 7247 – safe prime 7260 – triangular number 7267 – decagonal number 7272 – Kaprekar number 7283 – super-prime 7291 – nonagonal number 7310...

therefore a pentagonal pyramidal number, as well as a nonagonal number. It is also the fourth ordered Bell number, and a Keith number, because it recurs in a Fibonacci-like...

decagonal number, centered cube number country calling code for Cambodia 856 = 23 × 107, nonagonal number, centered pentagonal number, happy number, refactorable...

number, a happy number, the eighth 292-gonal number, and the fourth 1356-gonal number, as well as the 43rd centered nonagonal number. 8128 Nicomachus...

number following 189 and preceding 191. 190 is a triangular number, a hexagonal number, and a centered nonagonal number, the fourth figurate number (after...

super-prime 9316 – triangular number 9319 – super-prime 9334 – nonagonal number 9349 – Lucas prime, Fibonacci number 9361 - star number 9371 – Sophie Germain...

nonagonal number, centered octagonal number 8287 – super-prime 8321 – super-Poulet number 8326 – decagonal number 8345 - smallest pandigital number in...

hexagonal number. Furthermore, each even perfect number except for 6 is the 2 p + 1 3 {\displaystyle {\tfrac {2^{p}+1}{3}}} -th centered nonagonal number and...

fifty-four) is the natural number following 153 and preceding 155. 154 is a nonagonal number. Its factorization makes 154 a sphenic number. There is no integer...

fourth square triangular number. As a figurate number, 204 is also a nonagonal number and a truncated triangular pyramid number. 204 is a member of the...

261 is a deficient number, since 1 + 3 + 9 + 29 + 87 = 129 < 261. 261 is nonagonal number, unique period in base 2, and the number of possible unfolded...

Retrieved 11 June 2016. "Sloane's A001106 : 9-gonal (or enneagonal or nonagonal) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation...