Properties of the Number 12715

Twelve Thousand Seven Hundred Fifteen

Basics

Value: 12714 → 12715 → 12716

Parity: odd

Prime: No

Previous Prime: 12713

Next Prime: 12721

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 2543

Divisors: 1, 5, 2543, 12715

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000110101011

Octal: 30653

Duodecimal: 7437

Hexadecimal: 31ab

Square: 161671225

Square Root: 112.76080879454528

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

The q expansion of λ⁵, a Hauptmodul for Gamma₁(5). A78905

Numbers n such that the decimal expansions of both n and n² have 1 as smallest digit and 7 as largest digit. A257210

Number of inequivalent connected planar figures that can be formed from n 1 X 2 rectangles (or dominoes) such that each pair of touching rectangles shares exactly one edge, of length 1, and the adjacency graph of the rectangles is a tree. A216492

Number of complete necklace compositions of n. A325786

Start with two vertices and draw a circle around each whose radius is the distance between the vertices. The sequence gives the number of regions constructed after n iterations of drawing circles with this same radius around every new vertex created from all circles' intersections. A374337

Numbers k such that k and k² use only the digits 1, 2, 5, 6 and 7. A137004

a(n) = 44·n² - 1. A158628

Numbers k such that the least m for which m·k is a ludic number (if such an m exists) sets a new record. A378051

Number of (n+2) X 4 0..2 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..2 introduced in row major order. A204278

a(n) is the greatest integer such that binomial(a(n),n)*2^{1 - binomial(n,2}) < 1. A279032