Properties of the Number -2791

Seven Hundred Ninety-One

Basics

Value: -2792 → -2791 → -2790

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2791

Divisors: 1, 2791

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101011100111

Octal: -5347

Duodecimal: -1747

Hexadecimal: -ae7

Square: 7789681

Square Root: 52.82991576748916

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

a(0) = 1; a(n) = ∑_{k=0..floor((n-1)/2)} (-4)^k * a(k) * a(n-2·k-1). A352011

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 361", based on the 5-celled von Neumann neighborhood. A271417

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 493", based on the 5-celled von Neumann neighborhood. A272546

Hex (or centered hexagonal) numbers: 3·n*(n+1)+1 (crystal ball sequence for hexagonal lattice). A3215

Cuban primes: primes which are the difference of two consecutive cubes. A2407

First member of a prime triple in a 2p-1 progression. A57326

Smallest primitive factor of 10ⁿ - 1. Also smallest prime p such that 1/p has repeating decimal expansion of period n. A7138

Primes congruent to 1 mod 31. A142005

Number of regions that the line segments in A091908(n) cut the equilateral triangle into. A92098

Balanced primes of order two. A82077