Properties of the Number -271

Two Hundred Seventy-One

Basics

Value: -272 → -271 → -270

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 271

Divisors: 1, 271

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100001111

Octal: -417

Duodecimal: -1A7

Hexadecimal: -10f

Square: 73441

Square Root: 16.46207763315433

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(n) = -a(n-1) - a(n-2) + a(n-3), a(0)=0, a(1)=0, a(2)=1. A57597

Define E(n) = ∑_k>=0 (-1)^floor(k/3)*kⁿ/k! for n = 0,1,2,... . Then E(n) is an integral linear combination of E(0), E(1) and E(2). This sequence lists the coefficients of E(1). A143629

Expansion of (1-x-x^N)/((1-x)(1-x²)(1-x³)...(1-x^N)) for N = 6. A60025

Row sums of a number triangle related to the Pell numbers. A110331

First differences of A000463. A188652

Expansion of q^-3/8* η(q)⁷* η(q⁴)²/ η(q²)³ in powers of q. A128713

a(0)=1, a(1)=1; thereafter a(n) = -a(n-1) - 2·a(n-2). A169998

The sequence is {a(n), n>=0}, the concatenation of the binary expansions of the absolute values |a(n)| is {b(n), n>=0}; start with a(0)=0; thereafter a(n) = a(n-1)+n if b(n-1)=0, otherwise a(n) = a(n-1)-n. A309217

Inverted (definition in A075193) generalized tribonacci numbers A001644. A75298

A (4,-5) Somos-4 sequence. A171422