In mathematics, a decagonal number is a figurate number that extends the concept of triangular and square numbers to the decagon (a ten-sided polygon)...

A centered decagonal number is a centered figurate number that represents a decagon with a dot in the center and all other dots surrounding the center...

number 1005 = Mertens function zero, decagonal pyramidal number 1006 = semiprime, product of two distinct isolated primes (2 and 503); unusual number;...

100 integers 5051 – Sophie Germain prime 5059 – super-prime 5076 – decagonal number 5077 – prime of the form 2p-1 5081 – Sophie Germain prime 5087 – safe...

(four thousand) is the natural number following 3999 and preceding 4001. It is a decagonal number. 4005 – triangular number 4007 – safe prime 4010 – magic...

number of partially ordered set with 7 unlabeled elements 2047 – super-Poulet number, Woodall number, decagonal number, a centered octahedral number,...

centered heptagonal number 3052 – decagonal number 3059 – centered cube number 3061 – prime of the form 2p-1 3063 – perfect totient number 3067 – super-prime...

ISBN Group Identifier for books published in Turkey 976 = 24 × 61, decagonal number country calling code for Mongolia, ISBN Group Identifier for books...

fifth of the form 22 · q . the 5th Bell number, the number of ways to partition a set of 5 objects. a decagonal number. with an aliquot sum of 46; within an...

23,1,0). an octahedral number. a centered triangular number. a centered square number. a decagonal number. the smallest number that can be expressed as...

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

= 24. 6929 – highly cototient number 6930 – decagonal number, square pyramidal number 6931 – centered heptagonal number 6969 – 2015 comedic progressive...

octagonal number 9029 – Sophie Germain prime 9041 – super-prime 9045 – triangular number 9059 – Sophie Germain prime 9072 – decagonal number 9077 – Markov...

83), Smith number, Mertens function(636) = 0 637 = 72 × 13, Mertens function(637) = 0, decagonal number 638 = 2 × 11 × 29, sphenic number, sum of four...

19, sphenic number, 38th triangular number 742 = 2 × 7 × 53, sphenic number, decagonal number, icosahedral number. It is the smallest number that is one...

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

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

is prime 540 = 22 × 33 × 5. It is: an untouchable number. a heptagonal number. a decagonal number. a repdigit in bases 26 (KK26), 29 (II29), 35 (FF35)...

is a Wedderburn–Etherington number and a centered decagonal number; its reciprocal has period 10; 451 is the smallest number with this period reciprocal...

figurate number for a rhombic dodecahedron, the difference of two consecutive fourth powers: 175 = 44 − 34. It is also a decagonal number and a decagonal pyramid...

{\displaystyle 5^{2}+6^{2}} . It is also a centered decagonal number, and a centered hexagonal number. 61 is the fourth cuban prime of the form p = x 3...

Since 913 is a semiprime, 911 is a Chen prime. It is also a centered decagonal number. There are 911 inverse semigroups of order 7 (sequence A001428 in the...

the only such Granville number. 126 is a pentagonal pyramidal number and a decagonal number. 126 is also the different number of ways to partition a decagon...

the natural number following 231 and preceding 233. 232 is both a central polygonal number and a cake number. It is both a decagonal number and a centered...

{\displaystyle 361=19^{2},} centered triangular number, centered octagonal number, centered decagonal number, member of the Mian–Chowla sequence. There are...

partitions of 17. 297 is a decagonal number which applies the properties of triangular numbers to decagons. 297 is a Kaprekar number which means that it can...

centered triangular number, centered octagonal number, centered decagonal number, member of the Mian–Chowla sequence; also the number of positions on a...

pentagonal number, the fifth centered triangular number, and the first non-trivial centered decagonal number. For the Steiner tree problem, 31 is the number of...

The number of sides in the Petrie polygon is equal to the Coxeter number, h, for each symmetry family. Decagonal number and centered decagonal number, figurate...

twin prime. 151 is also a palindromic prime, a centered decagonal number, and a lucky number. 151 appears in the Padovan sequence, preceded by the terms...