Properties of the Number -1871

Eight Hundred Seventy-One

Basics

Value: -1872 → -1871 → -1870

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 1871

Divisors: 1, 1871

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101001111

Octal: -3517

Duodecimal: -10BB

Hexadecimal: -74f

Square: 3500641

Square Root: 43.255057507764334

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

Coefficients of modular function G₃(τ). A5761

a(n)=(-1)ⁿ(1 - (1/12)n(n + 1)(12 - n + n²)). A80275

Triangle read by rows: T(n,k) is the coefficient A_k in the transformation ∑_k=0..n x^k = ∑_k=0..n A_k*(x-2*(-1)^k)^k. A249267

Prime quadruples: numbers k such that k, k+2, k+6, k+8 are all prime. A7530

Initial members of prime triples (p, p+2, p+6). A22004

a(n) = 4·n² - 3·n + 1. A54552

Prime triples: p; p+2 or p+4; p+6 all prime. A7529

Finitary primes. Primes of finitary index. A277098

The slowest increasing sequence of primes such that difference of successive terms is unique. A84758

One of many square spiral sequences: a(n) = n² + n - floor((n-1)/2). A317186