Properties of the Number -2811

Eight Hundred Eleven

Basics

Value: -2812 → -2811 → -2810

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 937

Divisors: 1, 3, 937, 2811

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101011111011

Octal: -5373

Duodecimal: -1763

Hexadecimal: -afb

Square: 7901721

Square Root: 53.018864567246254

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

Second differences of A000463; first differences of A188652. A188653

G.f. satisfies A(x) = 1 + x·A(x) - x²*A(x)⁴. A367029

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 245", based on the 5-celled von Neumann neighborhood. A271007

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 453", based on the 5-celled von Neumann neighborhood. A272276

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 499", based on the 5-celled von Neumann neighborhood. A272563

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 501", based on the 5-celled von Neumann neighborhood. A272567

Number of partitions of n into an even number of parts. A27187

Number of partitions of 2n of type EE (see Comments). A236913

Number of cycle types of conjugacy classes of all even permutations of n elements. A46682

a(n) = 2·n² + 2·n - 1. A142463